QUIZ #17: Chemical Reactions (2/26/2025) - Gene Murray | Biblioteka

Instrukcije

Use your notes from class. Best of luck!

Obavezno

1

Which of the following are signs that a chemical reaction has occurred? (Select all that apply)

Color change

Temperature change

Production of gas

Dissolving in water

Obavezno

1

What are the substances called that you start with in a chemical reaction?

Products

Reactants

Catalysts

Inhibitors

Obavezno

1

What kind of reaction absorbs heat from its surroundings?

Chemical reaction

Physical change

Exothermic reaction

Endothermic reaction

Obavezno

1

What do we call substances formed after a chemical reaction?

Products

Endothermic substances

Catalysts

Reactants

Obavezno

1

What type of reaction releases energy in the form of heat?

Exothermic reaction

Light reaction

Endothermic reaction

Chemical change

Obavezno

1

What type of reaction is photosynthesis?

Endothermic reaction that absorbs energy.

A physical change with no energy change.

A combustion reaction with fire.

Exothermic reaction that releases energy.

Obavezno

1

Which process releases energy as heat or light?

Chemical equilibrium process of plants.

Nuclear reaction in sunlight.

Exothermic reaction like fire.

Endothermic reaction like photosynthesis.

Obavezno

1

A

B

C

D

Obavezno

1

A

B

C

D

Obavezno

1

What gases are produced when fuels burn?

Nitrogen gas

Oxygen gas

Water vapor

Carbon dioxide

Obavezno

1

What is needed for combustion to occur?

Oxygen

Hydrogen gas

Fuel

Carbon dioxide

Obavezno

1

What is a byproduct of burning fuels?

Soot

Heat

Light

Nitrogen