Which one of the following is an example of a solution?

• Salad

• Sands in water

• Vinegar

Two or more substances combined together. One substance dissolved into the other. You cannot separate them easily.

• Mixture

• Solution

Two or more substances combined together. You can see the different parts and separate them easily.

• Mixture

• Solution

Sand is

• mixture

• solution

Lemonade is

• mixture

• solution

What change of states are included in distillation? (Can select two or more answers)

• Melting

• Evaporation

• Condensation

• Freezing

Which of these is a mixture?

• Oxygen

• Carbon dioxide

• Gold

• Air

Burning of paper is a _______________ change

• reversibler

• irreversible

Melting of butter is a _______________ change

• Reversible

• Irreversible

What is an irreversible change?

• Something you can change back.

• Something you can not change back.