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Physical Science MidTerm Review

Total questions: 46

Worksheet time: 23mins

Name
Class
Date
1.
A testable prediction that predicts a cause and effect relationship between variables is a(n)
a)
hypothesis
b)
variable
c)
inference
d)
observation
2.
A factor in an experiment that changes in response to the independent variable is the ____.
a)
constant
b)
control group
c)
variable
d)
dependent variable
3.
All of the following are steps in the scientific method EXCEPT
a)
observing and recording data
b)
forming a hypothesis
c)
developing a model
d)
discarding data that doesn't match the hypothesis
4.
Which of the following is a quantitative observation?
a)
The dog has two legs.
b)
The dog is small.
c)
The dog is cute.
d)
The dog is fuzzy.
5.
Method for appropriately smelling unknown substances in the lab.
a)
waft
b)
conversion factor
c)
sniff
d)
open mouthed breathing
6.
Objective; based on information gathered using the five senses.
a)
Observation
b)
Inference
c)
Law
d)
Theory
7.
What is this piece of lab equipment called?
a)
beaker
b)
erlenmeyer flask
c)
bottle
d)
bunsen burner
8.
What is this piece of lab equipment called?
a)
beaker
b)
erlenmeyer flask
c)
bottle
d)
bunsen burner
9.
What is this piece of lab equipment called?
a)
beaker
b)
erlenmeyer flask
c)
bottle
d)

graduated cylinder

10.

Calculate the density of a piece of iron with a volume of 20cm³ and a mass of 200 g?

a)

40,000 g/cm³

b)

0.1 g/cm³

c)

10 g/cm³

d)

200 g/cm³

11.
Atoms of elements in the same group (column) of the periodic table share the same
a)
number of energy levels
b)
number of valence electrons
c)
atomic numbers
d)
atomic masses
12.
What is an atom's nucleus made of?
a)
protons and electrons
b)
protons only
c)
protons and neutrons
d)
neutrons only
13.

The total number of electrons in the outer shell (valence electrons) of a Lithium (Li) atom is

a)
1
b)
2
c)
3
d)
4
14.

The total number of electrons in the outer shell (valence electrons) of a Boron (B) atom is

a)
1
b)
2
c)
3
d)
4
15.
Which particles determine the atomic number of an element?
a)
Protons only
b)
Neutrons and Protons
c)
Neutrons only
d)
Protons and electrons
16.
Two different isotopes of an element have DIFFERENT
a)
numbers of neutrons
b)
numbers of protons
c)
atomic numbers
d)
nothing is different about them
17.

To which major group does this element belong to?

a)
lanthanides
b)
metalloids
c)
actinides
d)
transition metals
18.

To which major group does this element belong to?

a)

non metals

b)
metalloids
c)

metals

19.

To which major group does this element belong to?

a)

non metals

b)
metalloids
c)

metals

20.

How are the elements in the upper right of the periodic table classified?

a)
lanthanides
b)
metalloids
c)
metals
d)
nonmetals
21.

What ion will oxygen (O) form?

a)
+1
b)
+2
c)
-1
d)
-2
22.

What ion will Beryllium (Be) form?

a)
+1
b)
+2
c)
-1
d)
-2
23.

A bond forms between Sodium (Na) and Bromide (Br). Is this bond ionic, covalent, metallic, or none of these?

a)
ionic
b)
covalent
c)
metallic
d)
none of these
24.

Is Cu an atom, ionic compound, covalent compound, or none of these?

a)
atom
b)
ionic
c)
covalent
d)
none of these
25.

A bond forms between Carbon (C) and Sulfur (S). Is this bond ionic, covalent, metallic, or none of these?

a)
ionic
b)
covalent
c)
metallic
d)
none of these
26.
What does aqueous mean?
a)
Dissolved in water
b)
Related to aqua man
c)
When a solid melts and becomes a liquid.
d)
flammable
27.

If my reaction has 100 g of product, how many grams of reactants did it have?

a)
unable to determine from information given
b)
25 g
c)
50 g
d)
100 g
28.

Which reaction is represented by the model: AB + CD →\rightarrow AD + CB

a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
e)
Combustion
29.

Which reaction is represented by the model: AB + C →\rightarrow A + CB

a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
e)
Combustion
30.

Which reaction is represented by the model: AB →\rightarrow A + B

a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
e)
Combustion
31.

Which reaction is represented by the model: A + B →\rightarrow AB

a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
e)
Combustion
32.

Which reaction is represented by the model: X + O₂ →\rightarrow CO₂ + H₂O

a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
e)
Combustion
33.

After balancing this equation, report the correct coefficient to go in front of the NaF.

a)
1
b)
2
c)
3
d)
4
34.

What type of reaction is this?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

35.
What pH range is a base?
a)
0-6
b)
7
c)
8-14
36.

What pH range is an acid?

a)
0-6
b)
7
c)
8-14
37.
What is the reaction called when you mix an acid and a base?
a)
Decomposition
b)
Replacement
c)
Neutralization
d)
Synthesis
38.
Acids taste _______ while bases taste __________.
a)
sweet; salty
b)
sour ; bitter
c)
salty; sweet
d)
bitter; sour
39.
One of the defining characteristics of bases are that they feel
a)
warm
b)
slippery
c)
sticky
d)
itchy
40.
What type of reaction takes place in the sun?
a)
Nuclear Fusion
b)
Nuclear Fission
c)
Spontaneous Fission
d)
Double beta decay
41.
A beta particle is also known as
a)
an electron
b)
a positron
c)
a helium nucleus
d)
a proton
42.
An alpha particle is also known as
a)
an electron
b)
a positrion
c)
a helium nucleus
d)
a proton
43.

If there was 50 grams of a radioactive nuclide and it decayed to 12.5 g, how many half-lives passed?

a)
8
b)
3
c)
one eighth
d)
2
44.
Which of the following statements is characteristic of gamma rays?
a)
It is positively charged
b)
It is negatively charged
c)
It has no charge and no mass
d)
it has poor penetrating ability
45.
What would go in the blank to balance this nuclear reaction?
a)

42 He

b)

01 H

c)

0-1 e

d)

00Ϫ

46.
What happens to the HALF-LIFE of a radioactive substance as the substance decays?
a)
It stays the same
b)
It decreases
c)
It increases
d)
It could do any of these

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