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WorksheetsScience
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
what is a group on the periodic table?
a)
Broken Substance
b)
Rows
c)
columns
d)
The weeknd
2.
what is a period on the periodic table?
a)
group
b)
column
c)
Row
d)
the weeknd
3.
What does the Atomic number tell you about an element?
a)
Its favorite number
b)
Protons and Electrons
c)
Protons
d)
Neutrons
4.
The law of conservation of mass states...
a)
Mass can be created and destroyed
b)
Mass can not be created nor destroyed
c)
something contains mass
d)
Nothing can be desttroyed
5.
How many valence electrons does an atom need to have to be very reactive?
a)
1 & 7
b)
2 & 3
c)
6 & 8
d)
3 & 4
6.
What is a metal?
a)
Something that is solid and very conductive
b)
Weak and dull
c)
A gas
d)
A non-metal
7.
What does a metalloid consist of?
a)
Something with face ((:
b)
A non-metal
c)
a metal
d)
Characteristics of a metal and a non-metal
8.
What is a non-metal?
a)
dull
b)
Bad conductivity
c)
right side of the periodic table
d)
all of the above
9.
How do you find atomic mass?
a)
Add protons and electrons
b)
add protons and neutrons
c)
add the atomic mass and the electrons
d)
None of these
10.
Which indicates that it is a physical change?
a)
Odor change
b)
Color change
c)
Rearranged atoms
d)
Change in size
11.
Which is a chemical change?
a)
Paper torn in half.
b)
melting butter.
c)
Expired cheese.
d)
Hair cutting.
12.
How many valence electrons does Oxygen have?
a)
6
b)
8
c)
4+4
d)
4
13.
How do you count atoms in a chemical equation.
a)
Add the subscripts and multiply coefficients to the element.
b)
Add an element at a time and add the coefficients at the end.
c)
You just use your hand.
d)
Multiply with subscripts and add with the coefficients.
14.
How do you tell if a chemical equation is balanced?
a)
same amount of atoms on both sides of the equation.
b)
Same amount of atoms for all elements on both sides of the equation.
c)
After you add and subtract.
d)
Ask the teacher.
15.
Which of these is a chemical change?
a)
All of the above.
b)
Rotting bananas
c)
iron nail rusting.
d)
Baking a cake.
16.
What is the difference between a chemical and physical change?
a)
Physical changes are reversible, as chemical changes are not.
b)
Different names
17.
What group is Potassium located in?
a)
1
b)
2
c)
3
d)
16
18.
Which element contains more atoms Boron or Lithium?
a)
B
b)
Boron
c)
Lithium
d)
K
19.
Is odor ALWAYS a sign of a chemical change?
a)
No
b)
Maybe
c)
Yes
20.
What element causes combustion and what does it represent?
a)
Oxygen and Physical
b)
Fire
c)
Oxygen and Chemical
d)
Neon and Chemical.
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