Ch. 1: Introduction to Matter

The abilities to dissolve in water and to conduct electricity are examples of...

• natural properties

• chemical properties

• natural laws of matter

• physical properties

Which is the correct equation for calculating density?

• Density = Mass / Volume

• Density = Mass / Weight

• Density = Volume / Mass

• Density = Volume / Weight

Which of the following describes a physical change?

• a marshmallow burns over an open flame

• icicles melt from a rooftop

• a cat eats a piece of fish

• milk turns sour

The law of conservation of mass states that

• matter is neither created nor destroyed

• the mass of an object remains the same even if chemical change occurs

• the number of molecules before and after a chemical reaction cannot change

• mass is lost when a chemical change occurs

Temperature is...

• the movement of thermal energy from a solid to a liquid

• the difference in thermal energy between two objects

• a measure of how hot or cold something is

• a measure of how fast thermal energy is moving

A mixture in which you can usually see the different parts and they can easily be separated out.

• heterogenous

• homogenous

• hemigenous

• halogenous

Baking a cake is an example of a

• chemical reaction

• physical reaction

• homogeneous reaction

• heterogeneous reaction

Which of these is an example of an exothermic reaction?

• lighting a candle

• ice melting

• photosynthesis

• baking bread

• water evaporating from a puddle

The amount of matter in an object is called

• mass

• matter

• volume

• weight

Anything that has mass and takes up space is called

• mass

• matter

• volume

• weight