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WorksheetsBig Unit 1 Test Review for Core Science
Total questions: 36
Worksheet time: 30mins
Name
Class
Date
1.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
2.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
3.
Which of the following atomic symbols is written correctly?
a)
OH
b)
oH
c)
fe
d)
H
4.
Which of the following is a pure substance?
a)
CO
b)
C02
c)
Co
d)
H2O
5.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
6.
What element is found in all four areas of the earth that we studied?
a)
Sodium (Na)
b)
Oxygen (O)
c)
Carbon (C)
d)
Nitrogen (N)
7.
What is the most abundant element found in the earth's atmosphere?
a)
Oxygen
b)
Sulfur
c)
Nitrogen
d)
Argon
8.
What is the most abundant element in the human body?
a)
Oxygen
b)
Carbon
c)
Nitrogen
d)
Calcium
9.
Which element is the most abundant in Earth's oceans?
a)
Hydrogen
b)
Water
c)
Oxygen
d)
H2O
10.
Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is
a)
a gas at room temperature.
b)
made up of two different elements.
c)
given off by green plants.
d)
useful to human beings.
11.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
12.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
13.
An atom has 5 protons and 7 neutrons. What is the mass number of the atom?
a)
5
b)
7
c)
2
d)
12
14.
What carries no charge
a)
Neutrons
b)
Electrons
c)
Protons
15.
What are the basic building blocks for all matter?
a)
atoms
b)
elements
c)
compounds
d)
chemicals
16.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
17.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
18.
The smallest unbreakable unit of a compound is called
a)
subscript
b)
proton
c)
formula
d)
molecule
19.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
20.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
21.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Compound
b)
Atom
c)
Chemical
d)
Element
22.
What is the atomic number?
a)
the number of protons (and also electrons)
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of energy levels
23.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
24.
What is Fe2O3
(rust) made up of?
(rust) made up of?
a)
1 flourine, 2 einsteinium,
3 oxygen
3 oxygen
b)
2 fluorine, 3 oxygen
c)
2 iron, 3 oxygen
d)
2 iron, 3 osmium
25.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
26.
The first energy level can hold up to how many electrons?
a)
8
b)
4
c)
2
d)
5
27.
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.
28.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
29.
Element or compound?
H2O
H2O
a)
element
b)
compound
30.
Element or compound?
O2
O2
a)
Element
b)
Compound
31.
Which of the following is NOT an element?
a)
H2O
b)
H2
c)
O2
d)
Au
32.
Ramone wants to know: does the distance a person kicks a soccer ball effect how well they will do on their math test. What is the dependent variable?
a)
How far they kick the soccer ball
b)
who the person is
c)
how well they do on the math test
d)
Type of soccer ball.
33.
Marcos wants to know: Does the type of gasoline put in a car effect how fast the car can drive? What is the independent variable?
a)
Type of gasoline
b)
which car the gas is put into
c)
how fast the car can drive
d)
how much gas is put into the car
34.
Angelina set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
a)
Distance traveled by the ball
b)
Height of the ramp
c)
Mass of the ball
d)
Who set up the experiment (Ms. S, etc)
35.
The thing that makes an element special is its number of ...
a)
electrons
b)
neutrons
c)
energy levels
d)
protons
36.
Which of the following is a chemical formula?
a)
Cu
b)
Na
c)
H2+O2 > H2O
d)
NaCl
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