Matter, Properties and Changes

What two quantities are needed to calculate density?

• weight and mass
• mass and volume
• temperature and mass
• volume and temperature

Why does a solid copper block sink to the bottom of a container of water?

• It has more mass than the water.
• It is colder than the water.
• Solids always sink in liquid.
• It is denser than the water.

Which of the following is a chemical property of water?

• Reacts with pure sodium.
• Boils at 100 ^oC.
• Dissolves sugar easily. 
• Has a density of 1 gm/mL

Tags

NGSS.MS-PS1-2

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Tags

NGSS.MS-PS1-2

Which types of property are color, odor, state of matter and solubility?

• physical properties
• chemical properties

Which of the following properties is a physical property?

• ductility
• reactivity with oxygen
• flammability
• non-reactive

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

If water has a boiling point of 100^o C (212^o F), what state would it be in at room temperature?

• gas
• liquid
• plasma
• Bose-Einstein condensate

Tags

NGSS.MS-PS1-4

What characteristic defines all chemical changes?

• There is a change of state.
• Electricity is produced.
• A new material is formed.
• Bubbles are produced. 

Tags

NGSS.MS-PS1-2

What is the best way to tell the difference between aluminum and silver?

• Only one conducts electricity.
• Only one can be shiny. 
• One is much denser than the other. 
• Only one is magnetic.