A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds. Types of compounds include covalent and ionic compounds. They differ in the nature of the bonds that hold their atoms or ions together.
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Contents
- 1 Is it possible for two different compounds to be made from the exact same two elements Why or why not?
- 2 What does a given compound always has the same composition?
- 3 How can all of the compounds in the universe be composed of just over 100 elements?
- 4 What elements can be combined?
- 5 Why is the formula for a compound always the same?
- 6 What does it mean to say that a given compound has the same composition at the molecular level?
- 7 Can a compound be two of the same element?
- 8 Which law states that a compound is always composed of the same elements in the same proportion by mass?
- 9 What is matter that can vary in composition?
- 10 How do you know the difference between a compound and mixture?
- 11 How is it that substances can have the same chemical formulas but make different types of matter?
- 12 Why all compounds are molecules but not all molecules are compounds?
- 13 Can all compounds be molecules?
- 14 What do all elements have in them and what is different about all elements?
- 15 What changes must happen for elements to become a compound?
- 16 What happens when elements combine together usually resulting to new elements?
- 17 How are atoms of the same element similar and different?
- 18 How do elements react with each other?
- 19 Is every atom the same?
- 20 What would happen if you mixed all the elements together?
- 21 Is there only ever one way that two elements can combine to form a compound?
- 22 How do the properties of a compound compare with the properties of the elements?
- 23 Do all pure samples of a given compound have the same percent composition explain?
- 24 What term defines a substance that consists of a solute dissolved in a more abundant substance called the solvent?
- 25 What does it mean that every compound has a definite composition by mass?
- 26 Is law of constant composition is also called the law of multiple proportions?
- 27 How do molecules of elements and molecules of compounds differ in what ways are they similar?
- 28 What kind of matter which is always made up of the same combination of atoms?
- 29 What is difference between H * * * * * * * * * * mixture and heterogeneous mixture?
- 30 Which law states that matter is neither created nor destroyed?
- 31 Is matter that is always made up of the same combination of atoms?
- 32 What is the difference between compound and mixture with example?
- 33 How are compounds and mixtures alike How are they different?
- 34 How are molecules and compounds the same?
- 35 What is the difference between molecules compounds and elements?
- 36 Whats the difference between a compound and a molecule?
- 37 Is it possible for two different compounds to be made from the exact same two elements Why or why not?
- 38 Can a compound be two of the same element?
- 39 How do you know the difference between a compound and mixture?
- 40 Are compounds always molecules?
- 41 How would you differentiate between a molecule of an element and a molecule of a compound class 9?
- 42 Why is each element unique and different?
- 43 Why do different elements have different properties?
- 44 Why all compounds are molecules but not all molecules are compounds?
- 45 What word describes different compounds which are found together but not combined chemically?
- 46 What would happen if elements do not react with each other or combine to form compounds?
- 47 When elements combine in a chemical reaction there is a new substance formed known as chemical?
- 48 How are atoms of different elements the same what always makes elements different from each other?
- 49 Why do all atoms of an element have the same atomic number although they have different mass number?
- 50 What is the same for all atoms of the same element?
- 51 How can there be more than one type of atom of the same element?
- 52 Can all elements react with each other?
- 53 What happens if you mix every metal?
- 54 What would happen if you mixed all the elements together?
Is it possible for two different compounds to be made from the exact same two elements Why or why not?
Yes, it is possible to combine the same two elements to form two different compounds. An example is carbon dioxide CO2 and carbon monoxide CO. This is because two elements can form different types of bond and end up with different compounds.
What does a given compound always has the same composition?
A compound always has the same elements in the same proportions. For example, carbon dioxide always has two atoms of oxygen for each atom of carbon, and water always has two atoms of hydrogen for each atom of oxygen.
How can all of the compounds in the universe be composed of just over 100 elements?
All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds. A sample of any given pure element is composed only of the atoms characteristic of that element, and the atoms of each element are unique.
What elements can be combined?
Elements can be chemically combined into compounds, therefore, a compound consists of two or more elements combined, in definite proportions, by chemical means. Compounds may be formed by combining atoms of their constituent elements by ionic bonds or by covalent bonds.
Why is the formula for a compound always the same?
A compound consists of atoms of two or more elements combined in a small, whole-number ratio. In a given compound, the numbers of atoms of each of its elements are always present in the same ratio (Figure 2).
What does it mean to say that a given compound has the same composition at the molecular level?
What does it mean to say that a given compound always has the same composition? The molecules of that compound always contain the same number and types of atoms. You just studied 4 terms!
Can a compound be two of the same element?
A compound is a unique substance that forms when two or more elements combine chemically. A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds. Types of compounds include covalent and ionic compounds.
Which law states that a compound is always composed of the same elements in the same proportion by mass?
law of definite proportions, statement that every chemical compound contains fixed and constant proportions (by mass) of its constituent elements.
What is matter that can vary in composition?
A mixture is. matter that can vary in composition. Mixtures are combinations. of two or more substances that are physically blended. together.
How do you know the difference between a compound and mixture?
Difference between Compound and Mixture
Compounds are formed because of chemical bonding between two elements. Mixtures are formed when substances are physically mixed with one another.
How is it that substances can have the same chemical formulas but make different types of matter?
How is it that substances can have the same chemical formulas but make different types of matter? They can have the same elements, but have a different molecular structure making different products.
Why all compounds are molecules but not all molecules are compounds?
When two or more atoms of different elements join together, we call it a compound. All compounds are molecules, but not all molecules are compounds. That is because a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule.
Can all compounds be molecules?
Within the realm of octet-seeking chemical bonding exist two distinct subdivisions: molecules and compounds. All compounds can be classified as molecules, but not all molecules can be called compounds.
What do all elements have in them and what is different about all elements?
The number of protons in an atom is called its atomic number (Z). This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.
What changes must happen for elements to become a compound?
When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).
What happens when elements combine together usually resulting to new elements?
When two or more elements combine to form a new substance, it is called a compound. There are many different types of compounds, because atoms of elements combine in many different ways to form different compounds. Examples include water (H2O) and table salt (NaCl).
How are atoms of the same element similar and different?
ISOTOPES AND ATOMIC MASSES
For many of the chemical elements there are several known isotopes. Isotopes are atoms with different atomic masses which have the same atomic number. The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.
How do elements react with each other?
Elements combine to form chemical compounds that are often divided into two categories. Metals often react with nonmetals to form ionic compounds. These compounds are composed of positive and negative ions formed by adding or subtracting electrons from neutral atoms and molecules.
Is every atom the same?
Everything in this world are matter and comprises of atoms. But each and every atom is unique. They are not the same at all. Every atom consists of three basic units protons, neutrons, and electrons and these units determine the physical and chemical properties of an atom and matter.
What would happen if you mixed all the elements together?
What would you get if you combined one atom each from all the elements in the periodic table? It wouldn’t make anything really. If we combine one of each of the atoms from the periodic table, the result would be so small that we wouldn’t notice it, even with the best electron microscopes.
Is there only ever one way that two elements can combine to form a compound?
Many chemical elements of the periodic table can combine to form compounds. However, not all of the elements combine in the same way. It is important to take the individual properties of each element into account before writing the chemical compound that forms from combining them.
How do the properties of a compound compare with the properties of the elements?
The properties of compounds are different from the properties of the elements that form them—sometimes very different. That’s because elements in a compound combine and become an entirely different substance with its own unique properties. Do you put salt on your food? Table salt is the compound sodium chloride.
Do all pure samples of a given compound have the same percent composition explain?
The subscripts in the formula are first used to calculate the mass of each element in one mole of the compound. This is divided by the molar mass of the compound and multiplied by 100%. The percent composition of a given compound is always the same, given that the compound is pure.
What term defines a substance that consists of a solute dissolved in a more abundant substance called the solvent?
solution consists of particles of matter called a solute mixed with a more abundant substance, usually water, called a solvent.
What does it mean that every compound has a definite composition by mass?
The law of definite composition states that every compound has a definite composition by mass. What does that mean? It means that the masses of the elements in a compound are always the same ratio, no matter how much of the compound is tested or where the compound comes from.
Is law of constant composition is also called the law of multiple proportions?
The Law of Constant Composition, discovered by Joseph Proust, is also known as the Law of Definite Proportions. It is different from the Law of Multiple Proportions although both stem from Lavoisier’s Law of Conservation of Mass.
How do molecules of elements and molecules of compounds differ in what ways are they similar?
In what ways are they similar? Molecules of elements contain only one type of atom; molecules of compounds contain two or more types of atoms. They are similar in that both are comprised of two or more atoms chemically bonded together.
What kind of matter which is always made up of the same combination of atoms?
Element : A pure substance composed of the same type of atom throughout.
What is difference between H * * * * * * * * * * mixture and heterogeneous mixture?
1. A homogenous mixture is that mixture in which the components mix with each other and its composition is uniform throughout the solution. A heterogenous mixture is that mixture in which the composition is not uniform throughout and different components are observed.
Which law states that matter is neither created nor destroyed?
The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed.
Is matter that is always made up of the same combination of atoms?
A substance is matter that is always made up of the same combination of atoms. There are two types of substances— elements and compounds.
What is the difference between compound and mixture with example?
| Parameter | Compound | Mixture |
|---|---|---|
| Examples of Compound and Mixture | Methane, salt, baking soda, etc | Brass, chromium, bismuth, etc |
How are compounds and mixtures alike How are they different?
A mixture is composed of two or more elements or compounds in a non-fixed ratio, which means you can vary the amount of substance in a mixture. A compound is composed of two or more elements in a fixed ratio, so you cannot vary the amount of each element in a compound.
How are molecules and compounds the same?
A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds. All compounds are molecules.
What is the difference between molecules compounds and elements?
The main difference between element molecule and compound is that an element is a substance that cannot be further divided into parts by chemical means whereas a molecule is a substance that can be further divided into parts by chemical means and a compound is also a type of molecule but is composed of different types …
Whats the difference between a compound and a molecule?
Difference between molecules and compounds
Molecules are formed by two or more atoms that are bonded by chemical bondings. Compounds are constructed by two or more elements where the elements are mixed in fixed ratios. Not all molecules can be called compounds.
Is it possible for two different compounds to be made from the exact same two elements Why or why not?
Yes, it is possible to combine the same two elements to form two different compounds. An example is carbon dioxide CO2 and carbon monoxide CO. This is because two elements can form different types of bond and end up with different compounds.
Can a compound be two of the same element?
A compound is a unique substance that forms when two or more elements combine chemically. A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds. Types of compounds include covalent and ionic compounds.
How do you know the difference between a compound and mixture?
Difference between Compound and Mixture
Compounds are formed because of chemical bonding between two elements. Mixtures are formed when substances are physically mixed with one another.
Are compounds always molecules?
Definition of a Compound
This information holds with the initial statement that all compounds are molecules, but not all molecules are compounds. As compounds contain atoms of different elements, they represent a subset of the molecule category.
How would you differentiate between a molecule of an element and a molecule of a compound class 9?
Molecules of an element contains the same kind of atoms,e.g. P4 is a molecules of element which contains all four atoms of phosphorus. Molecules of a compound contains two or more kinds of atoms, e.g. H2O is molecules of compound which contains 2 atoms of hydrogen and 1 atom of oxygen.
Why is each element unique and different?
Each element has its own unique properties. Each contains a different number of protons and neutrons, giving it its own atomic number and mass number. The atomic number of an element is equal to the number of protons that element contains.
Why do different elements have different properties?
The difference in the number of protons and neutrons in atoms account for many of the different properties of elements. But most of the “real world” physical properties of materials – at least the ones we experience and relate to most – are caused by the electrons.
Why all compounds are molecules but not all molecules are compounds?
Every combination of atoms is a molecule. A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element.
What word describes different compounds which are found together but not combined chemically?
A mixture contains two or more different substances that are not chemically joined together. The different substances in a mixture can be elements and/or compounds. dome7w and 3 more users found this answer helpful.
What would happen if elements do not react with each other or combine to form compounds?
What would happen if the atoms of elements couldn’t join together to form molecules? There would be no such thing as water. The world would be very different if compounds didn’t exist. formed when sodium atoms join with chlorine atoms.
When elements combine in a chemical reaction there is a new substance formed known as chemical?
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products.
How are atoms of different elements the same what always makes elements different from each other?
the mass or weight of an atom depends on the number of protons and neutrons it contains. atoms of elements that contain more protons and neutrons have greater overall mass. some elements have a range or series of atomic masses in which the number of protons is always constant but the number of neutrons varies.
Why do all atoms of an element have the same atomic number although they have different mass number?
Isotopes of any given element all contain the same number of protons, so they have the same atomic number (for example, the atomic number of helium is always 2). Isotopes of a given element contain different numbers of neutrons, therefore, different isotopes have different mass numbers.
What is the same for all atoms of the same element?
Atoms of the same element have the same atomic number so the number of protons (and electrons) are same. But they have same or different mass numbers (like that for isotopes). Different mass number will have different number of neutrons. Was this answer helpful?
How can there be more than one type of atom of the same element?
Two atoms of the same element can be different if their electrons are in different states. If one copper atom has an electron in an excited state and another copper atom has all of its electrons in the ground state, then the two atoms are different.
Can all elements react with each other?
All elements, apart from the noble gases, are chemically reactive, because they are more stable electronically when they share electrons with other atoms.
What happens if you mix every metal?
What would happen if you mixed all the elements together?
What would you get if you combined one atom each from all the elements in the periodic table? It wouldn’t make anything really. If we combine one of each of the atoms from the periodic table, the result would be so small that we wouldn’t notice it, even with the best electron microscopes.
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