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atoms elements compounds mixtures

Total questions: 51

Worksheet time: 33mins

Name
Class
Date
1.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
2.
an atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
3.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
4.

If an atom has 12 protons, which of the following must it also have to be considered a neutral atom?

a)

12 neutrons

b)

12 electrons

c)

12 protons

d)

24 protons and neutrons

5.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
6.

What two particles determine the mass number?

a)

Protons and electrons

b)

Electrons and neutrons

c)

Protons and neutrons

7.

If the mass number of this chlorine atom is 36, how many neutrons does it have?

a)

17

b)

18

c)

19

d)

can't be determined

8.
An atom with an unequal number of protons and electrons is said to have (a) ___.
a)
no charge
b)
balance
c)
charge
d)
unbalance
9.
Two atoms of the same element but with different mass numbers are called________
a)
electrons
b)
isotopes
c)
variables
d)
electron cloud
10.
Where is the proton located?
a)
In the very dense nucleus
b)
Floating around in the negative electron cloud
c)
the loose nucleus
d)
the positive electron cloud
11.
In a stable atom the amount of electrons is electron is equal to
a)
neutrons
b)
protons
c)
atomic mass
d)
neutrons + protons
12.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
13.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
14.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
15.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
16.
How many atoms of Hydrogen are in this compound
a)
1
b)
2
c)
3
d)
4
17.
A pure substance that cannot be broken down into simpler substances.
a)
element
b)
compound
c)
molecule
d)
carbon dioxide
18.
Which of the following is a pure substance? 
a)
Water
b)
Salad
c)
Chocolate milk
d)
All of them 
19.
Which of the following is a pure substance? 
a)
Soil 
b)
Salt
c)
Water and sand
d)
Vanilla ice cream with chocolate
20.
A pure substance...
a)
Looks the same from every part you look 
b)
Looks different from every part you look
21.
Based on its composition, matter can be classified in...
a)
Pur substance & Mixture
b)
Solid, liquid, gas
22.
Marifer adds fruit to her yogurt. This is an example of a: 
a)
Pure substance
b)
Mixture
23.
Miss Pamela is thirsty and she prepares a lemonade. This is an example of a:  
a)
Pure substance
b)
Mixture
24.
A pure substance CAN'T BE separated physically. 
a)
True
b)
False
25.
Which of the following is a pure substance? 
a)
Water
b)
Sugar
c)
Wood
d)
ALL of them
26.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

27.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
28.

H2

a)

Element

b)

Compound

c)

Mixture

29.

NaCl

a)

Element

b)

Compound

c)

Mixture

30.
a)

Element

b)

Compound

c)

Mixture

31.
a)

Element

b)

Compound

c)

Mixture

32.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
33.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
34.
a)
element
b)
compound
c)
mixture of elements and compounds
d)
mixture of compounds
35.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds and elements
36.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
37.
a)
element
b)
compound
c)
mixture of elements and compounds
d)
mixture of compounds
38.
a)
element
b)
compound
c)
mixture of elements and compounds
d)
mixture of compounds
39.
a)
element
b)
compound
c)
mixture of elements and compounds
d)
mixture of compounds
40.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
41.

What is sugar, C12H22O11?

a)

element

b)

compound

c)

mixture

42.
Which one can be found on the periodic table?
a)
Compound 
b)
Element
43.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
44.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
45.

What step does every scientific experiment begin with?

a)

hypothesis

b)

question

c)

procedures

d)

conclusion

46.

The summary near the end of an experiment that explains whether or not your hypothesis was correct is.

a)

conclusion

b)

procedures

c)

materials

d)

responding variable

47.

What is an observation?

a)

Your opinion about what might of happened

b)

Using your senses to notice what is going on around you

c)

To be unaware of your surroundings

d)

an educated guess

48.
A series of steps used by scientists to solve a problem or answer a question. 
a)
scientific method
b)
recipe
c)
data collection
d)
metric system
49.

Observation or inference: This is a brown puppy.

a)

Observation

b)

Inference

50.

Observation or Inference: This puppy was abandoned

a)

Observation

b)

Inference

51.

Observation or Inference: The mini pig is happy.

a)

Observation

b)

Inference

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