Matter and mass

What is happening in the statement below?
The ice cube melted.

• Matter is changing from a liquid to a solid.
• Matter is changing from a liquid to a gas.
• Matter is changing from a solid to a liquid.
• Matter is changing from a gas to a liquid.

What are the 3 states of matter?

• Water, air, ball
• mass, volume, grams
• solid, liquid, gas
• chair, table, pencil

To change a solid to a liquid, what do you add?

• heat
• water
• cold
• mass

Which state of matter has a definite shape?

• solid
• liquid 
• gas

Which state of matter takes the shape of its container?

• solid
• gas
• liquid

A glass is filled with 100 g of tea and ice cubes. Which best describes the weight of the contents after the glass sits in the sun for 2 hours?

• The weight will be less than 100 g because some of the liquid will evaporate into the atmosphere.
• The weight would be much less than 100 g because mass is lost as the ice cubes melt.
• The weight will be 100 g because the weight of the tea and the ice cubes will remain the same since no change occurs.
• The weight will be more than 100 g because mass is increased as the ice cubes melt and more liquid is added to the glass.

Combining baking soda and vinegar to create carbon dioxide is an example of a ...

• Physical change
• Chemical change

This is an example of a _________.

• solid
• liquid
• gas

Burning and baking are examples of __________________ because they are irreversible.

• chemical changes
• physical changes
• melting
• freezing

This picture is an example of a ____________.

• solid
• liquid
• gas
• all of the above