1. What are the two pure substances?
Elements and compounds

2. What substance is made up of only one kind of atom?
element

3. True or False: An element can be broken down into simpler substances.

4. Is water an element or compound? Why?
Compound, because it can be broken down into simpler substances

5. Substances combined so that each substance keeps its own properties
What is a mixture?
Substances combined so that each substance keeps its own properties

6. What are the three kinds of mixtures?
Solutions, colloids, suspensions

7. A mixture is classified depending on ______________.
The size of its particles

8. In what type of mixture do the substances settle to the bottom ?
Suspension

9. What does it mean when a substance is malleable ?
That it is able to be hammered.
Metals are malleable.

10. What is viscosity ? A substance’s resistance to flow.
Honey and maple syrup have a high viscosity

11. Process that separates a mixture based on the size of the particles
What is filtration ?
Process that separates a mixture based on the size of the particles

12. What is a physical change?
A characteristic or a material that can be observed or measured without changing the composition of the substances

13. A material’s ability to burn in the presence of oxygen
What is flammability?
A material’s ability to burn in the presence of oxygen

14. Name the three types of chemical change?
Change in color
Formation of a gas
Formation of a precipitate

15. What were the two substances that Mr Rountree mixed to create a precipitate?
Milk and vinegar

16. A solid that forms and separates from a liquid mixture
What is a precipitate?
A solid that forms and separates from a liquid mixture

17. A substances mass per unit of volume(mass divided by volume)
What is density?
A substances mass per unit of volume(mass divided by volume)

18. What compounds form when a candle burns?
water and carbon dioxide

19. Copper is an example of a _____________.
Element

20. Water is an example of a __________________.
Compound

21. Sugar water is an example of a ___________.
Solution

22. What is distillation? Separates a mixture based on boiling point.
For instance, it can be used to separate salt and water from seawater.