1. Final Review

2. When one observes the phase of matter of water, one observes a ______ property of matter.
physical

3. Why does a balloon filled with helium rise while a balloon filled with an equal volume of average atmospheric air does not?
Helium is less dense

4. When you heat the air inside a hot air balloon, it rises
When you heat the air inside a hot air balloon, it rises. Why does this occur?
Convection

5. Which of the following best estimates the number of galaxies in the universe?
Hundreds of Billions

6. Which type of contact force has been applied when you hit a nail with a hammer?
impact force

7. What tool is commonly used to help see more details about the universe?
Telescope

8. What is the smallest particle of an element?
Atom

9. Friction, gravity and an applied force
What forces act upon a ball that is rolled across the floor?
Friction, gravity and an applied force

10. scientific investigation observations previous research
Scientific questions can be asked based on which of the following?
scientific investigation observations previous research

11. All substances have characteristic properties
All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be what kind of property?
Physical

12. What is an example of electrical energy that is found in nature?
Lightning

13. the types of atoms and bonds that a substance contains
Chemical properties of matter depend mostly on
the types of atoms and bonds that a substance contains

14. A car is slowed because the air it is moving through pushes against it
A car is slowed because the air it is moving through pushes against it. This contact force is known as
Air Resistance/Drag

15. Objects that are oppositely charged will do what to each other?
Attract

16. Which contact force always acts against the direction of movement?
Friction

17. Which physical property refers to the temperature at which a substance in a solid state transforms to a liquid state?
Melting point

18. This is defined as a push or a pull
Force

19. energy stored in the bonds of molecules is what kind of energy?
Chemical

20. What are the narrow belts of fast-moving air at the higher levels of the troposphere called?
Jet Streams

21. Which of the following best estimates the number of stars in a galaxy?
Hundreds of Billions

22. Each day, changes take place in the atmosphere
Each day, changes take place in the atmosphere. The average of these changes over a long period of time is called _______.
Climate

23. The smallest part of a compound that still has the properties of that compound is a(n)
Molecule

24. Density refers to a physical property that is measured using a ratio of _________ divided by _______.
Mass divided by volume

25. Four liquids were poured on top of each other in a glass, and the liquids separated into four different layers. Which liquid had the highest density?
The one on the bottom