1. Chemistry Review Test Thursday, March 3/4

2. Brittleness is a ____________ property. PHYSICAL

3. Vertical columns on the periodic table that have similar properties are called… GROUP OR FAMILY

4. Protons have what charge? POSITIVE

5. What particles are in the nucleus of an atom? PROTONS AND NEUTRONS

6. A pure substance made of two or more elements chemically combined in a set ratio is a… COMPOUND

7. What is the atomic number of Neon? 10

8. What parts of an atom move around the nucleus? ELECTRONS

9. If enough heat is added to a liquid, it can change into… A GAS

10. Burning wood is an example of what kind of change? CHEMICAL

11. Boiling water is an example of what kind of change? PHYISCAL

12. Is O 2 an example of an element, molecule, compound, or both (molecule and compound)? MOLECULE Molecules: two or more atoms bonded together

13. True or False Bleaching your hair is an example of a physical change. FALSE

14. How do you determine the number of protons of an element? ATOMIC NUMBER OR NUMBER OF ELEMENTS

15. Dissolving sugar in water is an example of what kind of change? PHYSICAL

16. What happens to the molecules in a liquid when thermal energy is added? THE MOLECULES START TO MOVE FASTER AND WILL TURN INTO A GAS

17. Lightening and neon lights are two examples of what phase of matter? PLASMA

18. True or False Kevlar is an example of a synthetic material? TRUE

19. How many electrons are in Rubidium? 37

20. Oxygen, Sulfur, Iron, and Helium are examples of… ELEMENTS

21. Define matter. Anything that has a mass and takes up space.

22. What phase of matter has a definite volume but not a definite shape. Liquid

23. Name this element. Sulfur

24. Rust is an indicator that what type of change has occurred? CHEMICAL

25. What change does an electron have? NEGATIVE

26. Horizontal rows in the periodic table are called… PERIODS

27. Electrical conductivity is an example of what kind of kind of property? PHYSICAL

28. What phase of matter has a definite shape and volume? SOLID

29. Only three questions left!

30. True or False. The atomic mass is the same number of protons and electrons. FALSE The atomic number is the same as the number of protons and electrons.

31. Glass breaking is an example of a _____________ change. PHYSICAL

32. What is the atomic mass of Chlorine? 35.453 or 35