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Chemistry Pre-test 8/20/21

Total questions: 70

Worksheet time: 18hrs 30mins

Name
Class
Date
1.

Before you leave the science room, you should

a)

wash your hands with soap and water.

b)

return all equipmernt to the proper storage area.

c)

clean your work area and equipment.

d)

all of the above.

2.

You have been injured in the laboratory (cut, burn, etc.). First you should

a)

apply first aid yourself

b)

tell your science teacher immediately

c)

see a doctor after school

d)

visit the school nurse after class

3.

Goggles are worn in the lab...

a)

any time chemicals are used

b)

any time heat is used

c)

any time glassware is used

d)

all of the above

e)

none of the above

4.

What is the center of an atom called?

a)

Neutron

b)

Proton

c)

Nucleus

d)

Electron

5.

What is a particle with one negative charge called?

a)

electron

b)

proton

c)

quark

d)

neutron

6.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
7.

What does the nucleus of an atom contain?

a)

Electrons and neutrons

b)

Protons and neutrons

c)

Neutrinos and positrons

d)

DNA and RNA

8.
If an atom has more protons that electrons, it will have a ___ charge?
a)
Positive
b)
Negative
c)
Neutral
d)
No charge, it would just disappear
9.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
10.
If you increase the amount of spinach you eat, then you will increase the iron in your blood. 
What's the dependent variable?
a)
increase the amount of iron in your blood
b)
spinach you eat
11.
What are the building blocks of MATTER?
a)
Atoms
b)
Cells
c)
Protons
d)
Neutrons
12.
What are the positively charged particles in an atom?
a)
Protons
b)
Neutrons
c)
Electrons
13.

States of Matter: Solid turning into a gas is called...

a)

melting

b)

freezing

c)

evaporation

d)

condensation

e)

sublimation

14.

States of Matter: Gas turning into a liquid is called...

a)

melting

b)

freezing

c)

evaporation

d)

condensation

e)

sublimation

15.

States of Matter: Which of the following has a tightly packed structure?

a)

solid

b)

liquid

c)

gas

16.

Atoms of the same element that have different numbers of neutrons.

a)

Isotope

b)

Covalent Bond

c)

Enzymes

d)

Ionic Bonds

17.

Which of these is an example of a Heterogeneous mixture:

a)

Tea with sugar

b)

oil and water

c)

NaCl

d)

H2O

18.

Which of these is an example of a Compound:

a)

Tea with sugar

b)

oil and water

c)

Gold

d)

H2O

19.
What is the volume in this buret?
a)
24.1mL
b)
24.3mL
c)
24.2L
d)
24.2mL
20.
Two basic properties of the gas phase are 
a)
a. a definite shape and definite volume
b)
b. a definite shape but no definite volume
c)
c. no definite shape but a definite volume
d)
d. no definite shape and no definite volume
21.

What are the states of matter?

a)

solid, liquid, gas, and plasma

b)

solid, water, gas, and plasma

c)

wood, liquid, gas, and water

d)

solid, liquid, helium, and wood

22.

Two or more substances that are together but NOT chemically combined is a(n)

a)

element

b)

compound

c)

mixture

d)

all of the above

23.

What describes how much matter is in an object?

a)

volume

b)

density

c)

mass

d)

weight

24.
________________ is anything that has mass and takes up space.
a)
volume
b)
matter
c)
mass
d)
weight
25.

Which lab tool should you use to measure the volume of a liquid?

a)

beaker

b)

electric balance

c)

test tube

d)

graduated cylinder

26.
Why do ice cubes float in a  glass of water?
a)
the ice cubes are more dense than the water
b)
the water is more dense than the ice cubes
c)
the water is more dense than the glass
d)
the ice is more dense than the glass
27.
Write 0.00000707 in scientific notation.
a)
7.07 x 10-6
b)
7.07 x 106
c)
707 x 108
d)
707 x 10-8
28.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
29.

987 mm = _____ cm

a)

98.7 cm

b)

9,870 cm

c)

9.87 cm

d)

0.987 cm

30.

2.7 L = _____ mL

a)

0.27 mL

b)

270 mL

c)

2,700 mL

d)

27 mL

31.

Which item has the highest density #?

a)

honey

b)

dish soap

c)

water

d)

vegetable oil

32.
A cube has a  volume od 8.0 cm3 and a mass of 21.6 grams.  The density of the cube, in grams per cubic centimeter, is best expressed as
a)
a. 2.7
b)
b. 2.70
c)
c. 0.37
d)
d. 0.370
33.
The atomic number of an atom is always equal to the total number of 
a)
a. neutrons in the nucleus
b)
b. protons in the nucleus
c)
c. neutrons plus protons in the atom
d)
d. protons plus electrons in the atom
34.
All the atoms of argon have the same
a)
a. mass number
b)
b. atomic number
c)
c. number of neutrons
d)
d. number of nucleons
35.
What is the mass number of an atom which contains 21 electrons, 21 protons, and 24 neutrons?
a)
a. 21
b)
b. 42
c)
c. 45
d)
d. 66
36.
What is the total number of neutrons in an atom of 7Li3?
a)
a. 7
b)
b. 10
c)
c. 3
d)
d. 4
37.
What is the total number of electrons in a Mg2+ ion?
a)
a. 10
b)
b. 2
c)
c. 12
d)
d. 24
38.
A K atom differs from a K+ ion in that the K atom has one
a)
a. more electron
b)
b. less electron
c)
c. more proton
d)
d. less proton
39.

The ___ constitutes most of the volume of an atom.

a)

Neutrons

b)

Electron Cloud

c)

Nucleus

d)

Protons

40.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
41.

What is the oxidation number for Carbon?

a)

+4 and -4

b)

-3

c)

+1

42.

Is this the correct lewis dot for Chlorine?

a)

yes

b)

no

43.

An ionic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

44.

1s22s22p63s23p63d104s24p3

Which element does this configuration belong to?

a)

Arsenic

b)

Calcium

c)

Lithium

d)

Aluminum

45.

A covalent bond is formed as a result of

a)

transferring electrons

b)

sharing electrons

c)

transferring protons

d)

sharing protons

46.
The elements in the modern Periodic Table are arranged according to their
a)
a. atomic number
b)
b. oxidation number
c)
c. atomic mass
d)
d. nuclear mass
47.
Which element has chemical properties that are most similar to the chemical properties of sodium?
a)
a. Mg
b)
b. K
c)
c. Se
d)
d. Cl
48.
Which element is a noble gas?
a)
a. krypton
b)
b. chlorine
c)
c. antimony
d)
d. manganese
49.

Which of the following is a nonmetal?

a)

calcium

b)

iron

c)

hydrogen

d)

potassium

50.
Is silicon a metal, nonmetal or metalloid?
a)
Metal
b)
NonMetal
c)
Metalloid
51.

Which of these are considered properties of metals? (choose ALL that apply)

a)

brittleness

b)

low melting point

c)

luster (shininess)

d)

malleability

e)

ductility

52.
Which of these would be covalently bonded
a)
Fr and K
b)
Sc and O 
c)
F and Cl
d)
He and Pt
53.

What is the ionic formula for a bond between Calcium and Phosphorus?

a)

Ca2P3

b)

Ca3P2

c)

Ca2P5

d)

P5Ca2

54.
How many Al atoms are in this compound?         4Al2O3
a)
2
b)
8
c)
6
d)
4
55.

Name the compound Na2O

a)

Sodium Oxide

b)

Sodium Dioxide

c)

Sodium Oxygen

d)

Sodium (I) Oxide

56.
Give the formula for oxygen dichloride
a)
OCl2
b)

O2Cl2

c)
OCl
d)
O2Cl
57.

A process that absorbs heat is a(n) _________.

a)

Exothermic process

b)

Polythermic process

c)

Endothermic process

d)

Ectothermic process

58.

Which of the following statements is NOT true about what happens in all chemical reactions?

a)

The ways in which atoms are joined together change

b)

New atoms are formed as products

c)

The starting substances are called reactants

d)

The bonds of reactants are broken and new bonds of products are formed

59.

What are the coefficients that will balance the skeleton equation below?

AlCl3 + NaOH → Al(OH)3 + NaCl

a)

1,3,1,3

b)

3,1,3,1

c)

1,1,1,3

d)

1,3,3,1

60.

Identify the products in this reaction: 6H2O + 6CO2 → C6H12O6 + 6O2.

a)

6H2 and 6CO2

b)

6CO2 and C6H12O6

c)

6H2O, C6H12O6, and 6O2

d)

C6H12O6 and 6O2

61.
If the pH of a solution is 7 the solution is said to be
a)
Acidic
b)
Basic
c)
Neutral
d)
Tasty
62.
Which pH value indicates the most basic solution?
a)
a. 7
b)
b. 8
c)
c. 3
d)
d. 11
63.

The equation 2C3H7OH + 9O2 → 6CO2 + 8H2O is an example of which type of reaction?

a)

Combustion reaction

b)

Single replacement reaction

c)

Double replacement reaction

d)

Decomposition reaction

64.

Which answer is an example of a chemical change?

a)

Boiling water

b)

rusting iron

c)

dissolving powder

d)

freezing water

65.

How many atoms are there in one mole of any element?

a)

6.02x10-23

b)

6.02x1023

c)

22.4

d)

2.06x10-2

66.
Which of the following colors of visible light has the longest wavelength?
a)
orange
b)
blue
c)
red
d)
green
67.
High frequency waves have _________ wavelength.
a)
varying
b)
high
c)
the same
d)
low
68.
What is the molar mass of one molecule of Nitrogen N2?
a)
14.01 amu
b)
14.01 g
c)
28.02 g
d)
28.02 amu
69.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
70.

What is the volume displacement of the robot?

a)

1.4

b)

1.6

c)

1.8

d)

2

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