Chemistry Chemical Reactions Review

What is the right part of a chemical equation called...

• Reactants

• Yields

• Products

• Chemical Equation

Which statement is not a description of a chemical reaction?

• A solid is dropped into a beaker of liquid and a gas is released.

• A solid is dropped into a beaker of liquid and an explosion occurs.

• Two liquids are mixed in a beaker and a solid forms at the bottom of the beaker.

• A liquid is heated in the sun and half of it evaporates.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is burning wood a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is a a rusting bicycle a chemical or physical change?

• chemcial

• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is spoiling food a physical or chemical change?

• phyiscal

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this balanced?
2HgO → 2Hg + O₂

• Yes

• No

Tags

NGSS.MS-PS1-5

Is this balanced?
Al + O₂ → 2Al₂O₃

• Yes

• No

Tags

NGSS.MS-PS1-5

Which is an example of a chemical reaction?

• paper cut into small pieces

• chocolate melting in a pan

• flour and sugar mixed in a bowl

• cookies baking in an oven

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

True or false: Exothermic reactions mostly absorb energy.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-5

The bombardier beetle's hot spray is a result of an...

• Exothermic chemical reaction

• Endothermic chemical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5