Chemical Reactions Review 2024

Front

What is the smallest particle of an element?

Back

Atom

Front

How many atoms of Hydrogen are in the compound H₃SO₄?

Back

2

Tags

NGSS.MS-PS1-1

Front

What is the chemical formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Tags

NGSS.MS-PS1-1

Front

Which of the following is an example of a physical change?

Back

A glass falling and shattering on the floor.

Front

What is the chemical formula that correctly displays 1 atom of nickel and 2 atoms of Fluorine?

Back

NiF₂

Tags

NGSS.MS-PS1-1

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between a physical change and a chemical change?

Back

A physical change affects one or more physical properties of a substance without altering its chemical composition, while a chemical change results in the formation of new chemical substances.

Tags

NGSS.MS-PS1-4

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Tags

NGSS.MS-PS1-5

Front

What is a reactant in a chemical reaction?

Back

A substance that takes part in and undergoes change during a reaction.

Front

What is a product in a chemical reaction?

Back

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5