Cambridge Checkpoint Science

To release energy from food is called:

• Movement
• Respiration
• Sensitivity
• Excretion

A physical change is 

• burning wood
• rusting metal
• cutting fruit
• cooking eggs

Lemonade is a solution because

• it is a combination of two or more substances and a new kind of matter is made.
• it is one substance whose kind of matter is not changed.
• it is a combination of two or more substances and the kind of matter of each is not changed.
• it is one substance whose kind of matter is changed.

When water changes from a liquid to a solid, it ______________ which is a ___________ change.

• melts, chemical
• melts, physical
• freezes, physical
• freezes, chemical

Why is baking cookie batter a chemical change?

• The substances that make up the batter become a different kind of matter.
• The substances that make up the batter change the way they look.
• The substances that make up the bater can be separated easily?
• The substances that make up the batter are heated.

You can separate saltwater by

• Pouring it through a strainer.
• Add food coloring.
• Boiling it.
• Freezing it.

A tossed salad is an example of a 

• mixture
• solution
• melted substance
• chemical change

A sculptor 

• causes a both a physical and chemical change.
• doesn't cause a physical or a chemical change.
• causes a chemical change.
• causes a physical change.

Which is a chemical change?

• frying eggs
• ripping paper
• freezing water
• making lemonade

Matter can be heated or cooled, it can be cut into pieces, it can be stretched or folded.

• True
• False