Law of Conservation of Matter

Front

What is a molecule?

Back

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

Front

What is a chemical formula?

Back

A chemical formula is a combination of symbols that shows the element(s) in a molecule or compound and the ratio of atoms.

Front

What does a chemical equation represent?

Back

A chemical equation is a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products.

Front

In a reaction where 15g of baking soda is mixed with 15g of vinegar and the final mass is 25g, what happened to the 'lost' 5g?

Back

The 'lost' 5g is in the gas that is formed during the reaction.

Front

How many atoms of aluminum are on each side of the equation 4Al + 3O2 --> 2Al2O3?

Back

There are 4 atoms of aluminum on each side of the equation.

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What does the Law of Conservation of Matter state?

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 the difference between reactants and products in a chemical reaction?

Back

Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.

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What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides, in accordance with the Law of Conservation of Matter.

Front

What is a reactant in a chemical equation?

Back

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

Front

What is a product in a chemical equation?

Back

A product is a substance that is formed as a result of a chemical reaction.