Chemical Review

A substance formed by a chemical reaction

• product

• enzyme

• substrate

• activation energy

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A change in the shape of an object is an example of _________________.

• a chemical change

• energy

• an endothermic change

• a physical change

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

• water freezes to form ice

• sugar dissolves in water

• gasoline burns in a car engine

• a piece of metal expands when it is heated

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following IS a physical change?

• Getting a haircut
• Rusty metal
• sour milk
• A compound

a copper penny turning greenish after a few years.

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

What are the states of matter?

• solid, liquid, and juice
• solid and liquid
• solid and gas
• solid, liquid, and gas

Tags

NGSS.MS-PS1-4

What is a solution?

• the liquid component of a solution

• the solid component of a solution that dissolves into the solvent.

• the amount of material dissolved in a measure of liquid

• a mixture of a solid and a liquid where the solid dissolves into the liquid.

Which of the following is a mixture?

• Kool aid

• orange juice

• salad without dressings

• none of the above

Which of the following ingredients will not dissolve?

• sugar

• salt

• sand

• baking soda

A(an) ______ is the number that appears before a formula in a chemical equation.

• subscript

• coefficient

• ratio

• denominator

Tags

NGSS.MS-PS1-5