Chemical Reactions Review

Anything that has mass and takes up space is

• space itself
• matter
• property
• a chemical reaction

Matter cannot be created nor destroyed, it can only

• disappear
• change form
• evaporate
• change into energy

Tags

NGSS.MS-PS1-5

________________ is an example of a chemical property

• boiling point
• conductivity
• color
• radioactivity

Examples of chemical changes are (select all that apply)

• baking a cake
• a bike chain rusting
• wood burning
• boiling water
• crumbling up a piece of paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Examples of physical changes are (select all that apply)

• boiling water
• crumbling up a piece of paper
• a glass breaking
• baking a cake
• a bike chain rusting

In a chemical reaction, what is the relationship between the total mass of the reactants and the total mass of the products?

• They must be equal
• The mass of the product must be greater
• The mass of the reactant must be greater
• There is no general relationship between the two

Tags

NGSS.MS-PS1-5

The starting materials in a chemical reaction are called

• products
• percipitates
• isotopes
• reactants

The new substances formed in a chemical reaction are called.

• products
• percipitates
• isotopes
• reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If 4 atoms of hydrogen react with 2 atoms of oxygen, how many atoms will be in the product?

• 2
• 4
• 6
• 8

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Given this chemical equation below, what is the total number of atoms in the reactants?

• 12
• 16
• 24
• 8

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5