Chemical Reactions

Front

What happens to atoms during a chemical reaction?

Back

The atoms of the reactants break apart, rearrange, and combine in new ways to form the products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What are the starting materials in a chemical reaction called?

Back

Reactants.

Front

What do the blue numbers in a chemical formula indicate?

Back

They indicate how many of that type of atom is present.

Front

How many sulfur atoms are present in the molecule with the formula that includes 'S3'?

Back

3.

Tags

NGSS.MS-PS1-1

Front

In a chemical reaction, what are reactants changed into?

Back

Products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a chemical reaction?

Back

A process in which substances (reactants) undergo a transformation to form new substances (products).

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Tags

NGSS.MS-PS1-5

Front

What is a product in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.

Tags

NGSS.MS-PS1-2

Front

What is the difference between a reactant and a product?

Back

Reactants are the starting materials, while products are the substances formed at the end of a chemical reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What role do coefficients play in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.