Welcome to the Unit 3 Practice Test. This practice test will help you to find the answers BEFORE you take the real test. If you are struggling with anything on this test, contact your teacher and ask for information.
Question 1
1.
Drag the descriptions to the correct category.
Need help on this question?
Look at a periodic table: https://ptable.com/
Watch a video: https://safeshare.tv/x/ss5db639e393fa7
Ductile, can be pulled into wire
Conducts electricity
Shiny
On the right side of the periodic table
Insulator
Dull
Malleable, can be flattened
Malleable
High melting point
Describe a metal
Describes a non-metal
Question 2
2.
What is the basic unit of matter?
Don't know the answer? Look here: https://www.thoughtco.com/most-basic-building-block-of-matter-608358
Question 3
3.
The atomic number is the number of __________ in an atom.
Don't remember what an atom is? Try this: https://safeshare.tv/x/ss5db63ba476907
Can't remember how to find out the number? Watch this: https://safeshare.tv/x/ss5db63c7526419
Question 4
4.
Conservation of energy means that
Can't complete this sentence? Watch this: https://safeshare.tv/x/H6D_ViW0Ch4
Question 5
5.
A reaction begins with 15 grams of reactant. How many grams of products will be formed by the reaction?
Can't remember how to think about this one? Watch a chemical reaction and see what happens: https://safeshare.tv/x/ss5db640ba937df
Question 6
6.
Sodium explodes when it contacts water. If I have a compound that contains sodium, will it explode if it is exposed to water?
Eeeeek! I need to review the differences between a compound and an element: https://safeshare.tv/x/ss5db641d43e3d9
Question 7
7.
Which statement is NOT true?
Need to review what a mixture is? https://safeshare.tv/x/ss5db6434244526
Question 8
8.
Another way to say reactants is
Check out something that will help with this answer: https://safeshare.tv/x/ss5db6445c90c08
Question 9
9.
Cells combine oxygen and glucose to create energy. This is called...
Hmm what is that called? Maybe Tim and Moby can help: http://quietube7.com/v.php/http://www.youtube.com/watch?v=7dKpnxEMzyw
Question 10
10.
Which of the following is an example of an exothermic reaction?
I need to review the differences between endothermic and exothermic reactions: https://safeshare.tv/x/ss5db648eb6fcd5
Question 11
11.
During a chemical reaction
I don't really get chemical reactions... I think I better watch this quick video: https://safeshare.tv/x/H1_hSUGOpWM