Properties of Matter

Which of the following can water NOT dissolve?

• Salt

• Sugar

• Oil

• Baking Soda

When water molecules stick easily to other water molecules, this is called what?

• cohesion

• adhesion

• solution

• polar molecule

Which statement explains why water molecules stick together?

• both sides are negative

• one side has a positive charge and the other side has a negative charge

• one side has a negative charge adn the other side has a neutral charge

• both sides are positive

Smallest unit of an element

• compound

• atom

• molecule

• product

Matter that vary in composition

• molecules

• elements

• atoms

• mixtures

What is an example of a compound?

• Table salt (NaCl)

• Air

• Oxygen (O₂)

• Salt water

Tags

NGSS.MS-PS1-1

What is an example of a mixture?

• Air

• Oxygen (O₂)

• Pure water (H₂O)

• Table salt (NaCl)

What two elements make up water?

• Helium and Oxygen

• Hydrogen and Oxygen

• Helium and Carbon

• Oxygen and Carbon

Tags

NGSS.MS-PS1-1

A water molecule is a _______ since the negative end of one water molecule is attracted to the positive end of another water molecule.

• polar molecule

• sustain life

• surface tension

• specific heat

The pH of pure water is what?

• 7

• 8

• 2

• 14