G7 U3 Practice Test

A different chemical substance is formed when:

• a cloth is cut

• a cup breaks

• a nail rusts

• a piece of wood breaks

While completing a science experiment, James notices that he has created a new substance. What type of change took place?

• chemical change

• physical change

• no change

• increase in mass

Which of these is a chemical property?

• ability to be broken

• ability to react with acid

• ability to melt when heated

• ability to be cut

Which of these describes a physical change in matter?

• milk going sour

• a nail rusting

• a carton of juice freezing

• cooking an egg

Determine whether the image depicts a physical change or a chemical change:

• chemical change

• physical change

Is this a chemical change or a physical change?

• chemical change

• physical change

Dissolving sugar in your coffee is a ____ change.

• chemical change

• physical change

Choose the statement which best demonstrates a chemical change. (There are 2 correct answers.)

• iron rusts

• sodium hydroxide dissolves in water

• a safety match ignites and burns

• a cube of ice melts to form a puddle of water

Choose the statement which best demonstrates a physical change. (There are 2 correct answers)

• sodium hydroxide dissolves in water

• a chocolate bar melts in the sun

• pancakes are cooking on the griddle

• wood and leaves rot to form humus

When water changes from a gas to a liquid, this is called?

• evaporation

• freezing

• condensation

• melting