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Physical Science Fall Review
Which is an example of a qualitative observation?
What is the equation for density?
Physical Science Fall Review
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1
What is the equation for density?
d=m*v
d=m/v
d=v/m
d=m+v
2
Which is an example of a qualitative observation?
The tree is 25 feet tall
There is one tree
The leaves are green
There are 3,276 leaves
3
Which group is the most reactive?
Transition Metals
Halogens
Alkaline Earth Metals
Alkali Metals
4
What does the number 79 represent?
Number of neutrons
Number of protons
Atomic mass
Atomic number
5
What type of reaction is this?
Single Replacement
Synthesis/Combination
Double Replacement
Decomposition
6
What type of compound is CO
2
?
Metallic
None of these
Ionic
Covalent
7
What do we call the substances on the right of the arrow? (ZnCl
2
+ Cu)
Reactants
Products
Ending
Coefficients
8
An example of a chemical change is
cutting a piece of paper
salt dissolving in water
water turning into ice
cake baking in the oven
9
What is an example of a physical change?
Burning
Rust
Melting
Decaying
10
What unit is volume measured in (in science class)?
cm2
cm3
in3
cm
11
Look at the periodic table: Where is K (potassium) located?
Period: 4, Group 1
Period: 1, Group 4
Period: 4, Group 2
Period: 2, Group 1
12
How is the periodic table arranged?
Atomic Mass
Alphabetically by Name
Atomic Number
Alphabetically by Symbol
13
The correct formula for sodium oxide is:
NaO2
S2O
NaO
Na2O
14
What does the period number represent?
Number of protons
Number of valence electrons
Total number of electrons
Number of rings/energy levels
15
What is the independent variable?
A variable you have no control over
The responding variable
It does not change
The manipulated or changed variable
16
Convert 159.6mm to ___ meters
1.596m
159600m
0.1596m
15.96m
17
Which of the following are part of the kinetic theory of matter?
All of these
Atoms are always in motion
Bigger particles move slower
Everything is made of atoms
18
Energy is added to a liquid, what phase change will occur?
Melting
Vaporization (evaporation)
Freezing (solidification)
Condensation
19
A box is 5cm x 1cm x 5cm. What is its volume?
25cm3
5cm3
11cm
25cm
20
Which one of the following is a good hypothesis?
Studying helps your grade.
Students who study do better.
If you don't study, you will fail.
If you study hard, then you will do well on your test.
21
A well written scientific explanation uses:
an educated guess
an experiment
words
claim, evidence, reasoning
22
How many atoms are there in CH
4
?
5
8
6
4
23
When Chlorine gains an electron, what charge will it have?
+1
0
-1
+7
24
What type of compound is PF
5
?
Covalent
Ionic
Metallic
None of these
