Chemical Reaction Quiz

In an endothermic reaction energy is...

• released
• absorbed
• protons
• neutrons

Tags

NGSS.MS-PS1-4

In an exothermic reaction energy is ...

• released
• absorbed
• protons
• electrons

Tags

NGSS.HS-PS1-4

What is happening to the molecules in a chemical reaction.

• The atoms are disappearing and reappearing

• The atoms are being rearranged

• The atoms stay in tier original order.

• The atoms stop moving.

The law of conservation of mass states....

• The total number of atoms will be the same before and after the reaction.

• Atoms will be lost during the reaction.

• Atoms will be gained during the reaction.

• Atoms get smaller in size in the chemical reaction.

Tags

NGSS.MS-PS1-5

The molecules you have before the reaction have a special name.

• The products

• The chemical formula

• The chemical equation

• The reactants

The molecules you have after a chemical reaction have a special name.

• The chemical equation

• The reactants

• The products

• The chemical formula

When a solid forms from the mixture of 2 liquids

• Effervescence

• Precipitate

• Odor

• Heat

Matter is destroyed in a chemical reactions

• True

• False

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2