3-1+Review+Grade+9+Topics

So, what can you recall about the following topics from last year? Here are objectives that you learned about last year. Using the

"Nelson Science 10 textbook",
as a reference point for review,
 * //Write TWO sentences for each of the letters under each major objective//**...

1. What is Chemistry all about? (pp.170-171) ....... a) Define 'chemistry'. ....... b) What are the two things that make up 'matter'? ....... c) List __any five__ physical properties. ....... d) For the substance we call "sugar" (sucrose), list __any three physical properties__. ....... e) How does chemistry affect our life? . 2. All matter can be classified. (pp.172-174) ....... a) Draw Figure 2, and define these terms: //pure substance, mixture, compounds, elements// ....... b) What is a __chemical change__? What are the 5 clues that a chemical change is happening? ....... c) Explain the difference between __reactants__ and __products__. ....... d) In an experiment, how would you test to see whether or not there was... ............... i) hydrogen gas there? ............... ii) carbon dioxide gas there?

3. All elements can be found on the Periodic Table. (pp.184-187) ....... a) Of what three parts are atoms made? Where is each located? ....... b) How many protons and neutrons are there in oxygen? chlorine? calcium? ....... c) On the periodic table, where are metals found? Where are non-metals found? ....... d) Use Figure 2 and Figure 3 to explain how you can tell whether an element is a metal or a non-metal. ....... e) Copy Table 1 on page 185, which shows other ways that metals and nonmetals differ. ....... f) On the periodic table, what group ("column") of elements generally don't form compounds? ....... g) What is the '7-letter-word-starting-with-"v" ' that means "an electron in the outer (furthest from the nucleus) shell"? . 4. The Periodic Table helps us (p.184-187) ....... a) Explain how you could use the periodic table to find: .............. i) the number of protons and neutrons .............. ii) the mass (or weight) of an atom .............. iii) which elements are similar to others