Properties and Conservation of Matter

Which Model Represents an element?

• 
• 
• 

Tags

NGSS.MS-PS1-1

Which equation has both molybdenum and mercury in it?

• A

• b

• c

• d

The process of cellular respiration converts glucose and oxygen into carbon dioxide and water. The balanced chemical equation for cellular respiration is shown.

Which statement about the cellular respiration reaction is true?

• The reactants contain 12 hydrogen atoms.

• The products contain 18 carbon atoms.

• The reactants contain 6 oxygen atoms.

• The products contain 12 oxygen atoms.

Answer explanation

Tags

NGSS.MS-PS1-2

Which model represents a compound?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Which one is a model of a heterogeneous mixture?

• A

• B

• C

• D

Which model represents an element?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Which model represents a homogeneous mixture?

• A

• B

• C

• D

True or False - Adhesion occurs between similar molecules and causes water to stay in droplets on

a table top.

• TRUE

• FALSE

Answer explanation

False BECAUSE Adhesion occurs between DIFFERENT molecules and causes the spread of water molecules in a paper

towel because the water and paper are different molecules, and cohesion causes the

like water molecules to stick together in a droplet.

Cohesion - Occurs between different molecules and causes the spread of water molecules

on a piece of paper towel.

• TRUE

• FALSE

Answer explanation

FALSE Cohesion occurs between SIMILAR Molecules and causes the

like water molecules to stick together in a droplet.

As you added drops to the coins, each drop stuck to the other water because of ________________.

• adhesion
• cohesion
• capillary action
• specific heat