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WorksheetsElements 7th Grade
Total questions: 45
Worksheet time: 32mins
Name
Class
Date
1.
Which number is the atomic mass?
a)
79
b)
196.97
2.
What does the atomic mass tell you?
a)
Basically,the number of electrons and protons
b)
The number of neutrons
c)
Basically, the number of protons and neutrons
d)
The number of protons.
3.
Which item on this element square represents the atomic number?
a)
13
b)
Al
c)
Aluminum
d)
26.981538
4.
An atom of the element with atomic number 6 always has _____.
a)
six protons in its nucleus
b)
an atomic mass of six
c)
more than six neutrons
d)
six electron clouds
5.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
6.
Elements are represented by chemical symbol. Symbols are written with
a)
all lower case letters
b)
all capital letters
c)
always only one letter
d)
At least and ONLY one capital letter
7.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
8.
The symbol for each element consists of the first letter (or two) of the element's name.
a)
True
b)
False
9.
How many electrons does carbon have?
a)
12.011
b)
6.011
c)
12
d)
6
10.
How many neutrons does nickel have?
a)
28
b)
58.71
c)
30
d)
31
11.
What is the name of this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
12.
What is the atomic number of this atom?
a)
2
b)
4
c)
6
d)
none of the above
13.
The innermost energy level has a maximum of how many electrons?
a)
1
b)
2
c)
6
d)
8
14.
What element is this?
a)
Boron
b)
Carbon
c)
Nitrogen
d)
Lithium
15.
On the periodic table, Periods are
a)
Horizontal rows
b)
Vertical columns
16.
On the periodic table, Groups are
a)
Horizontal rows
b)
Vertical columns
17.
a)
2
b)
3
c)
5
18.
a)
1
b)
2
c)
3
d)
4
19.
a)
6
b)
7
c)
8
d)
9
20.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
21.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
22.
Which properties are characteristic of the Group 1 metals?
a)
high reactivity and the formation of unstable compounds
b)
low reactivity and the formation of unstable compounds
c)
high reactivity and the formation of stable compounds
d)
low reactivity and the formation of stable compounds
23.
Which group contains elements that are inert (non-reactive)?
a)
Alkali Metals
b)
Alkaline earth metals
c)
Halogens
d)
Nobel Gases
24.
a)
Metals
b)
Nonmetals
c)
Metalloids
25.
a)
Metals
b)
Nonmetals
c)
Metalloids
26.
a)
Metals
b)
Nonmetals
c)
Metalloids
27.
Italian Salad Dressing
a)
heterogeneous mixture
b)
homogeneous mixture
28.
Milk
a)
Heterogeneous mixture
b)
Homogeneous mixture
29.
mashed, unpeeled potatoes
a)
Heterogeneous mixture
b)
Homogeneous mixture
30.
cake batter
a)
heterogeneous mixture
b)
homogeneous mixture
31.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
32.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
33.
Which is an example of a solute?
a)
Egg whites
b)
Sugar
c)
Water
d)
Acetone
34.
Bases are substances that ...
a)
accept hydrogen atoms
b)
reject hydrogen atoms
35.
On the pH scale higher numbers indicate
a)
acids
b)
bases
36.
Litmus paper is an indicator of acids and bases, it turns red for bases.
a)
True
b)
false
37.
A pH of 14 is a .....
a)
strong acid
b)
weak acid
c)
Strong base
d)
Weak base
38.
If you have a substance with a pH of 7.1 it is a(n).....
a)
Acid
b)
base
39.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
40.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
41.
A change where one or more new substances are created.
a)
Physical Change
b)
Chemical Change
42.
Rust on an iron bar is an example of chemical change.
a)
True
b)
False
43.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
44.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
45.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
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