Law of Conservation of Matter

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What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; it can only change forms.

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What is a coefficient in a chemical equation?

Back

A coefficient is a number in front of a chemical formula that indicates how many molecules or compounds of each reactant and product are involved in a reaction.

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If 20g of sugar is added to 100g of water, what is the mass of the solution?

Back

The mass of the solution will be 120g (20g of sugar + 100g of water).

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What is a molecule?

Back

A molecule is two or more atoms joined together, which can be from the same element or different elements.

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What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

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What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

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What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

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What is the mass of carbon monoxide formed when 12g of Carbon reacts with 16g of Oxygen?

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28g of carbon monoxide (CO) is formed.

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What happens to the total mass of reactants in a chemical reaction?

Back

The total mass of the reactants is equal to the total mass of the products, according to the Law of Conservation of Matter.

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What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction.