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WorksheetsElements, compounds and mixtures
Total questions: 42
Worksheet time: 22mins
Name
Class
Date
1.
An element can be broken down into simpler substances by...
a)
physical means
b)
chemical means
c)
Both chemical and physical means
d)
elements can't be broken down
2.
Which type of element is shiny, ductile and malleable?
a)
metal
b)
nonmetal
c)
metalloid
d)
play dough
3.
Which of these is a mixture?
a)
Carbon Dioxide
b)
Air
c)
Ammonia
d)
Table Salt
4.
Which of these is NOT a part of an atom?
a)
proton
b)
neutron
c)
gelectron
d)
electron
5.
Which two particles are found at the center of an atom, also called the nucleus?
a)
protons and electrons
b)
neutrons and electrons
c)
protons and neutrons
6.
Which is NOT an example of a compound?
a)
H2O
b)
NaCl
c)
CO2
d)
H
7.
What is different about Hydrogen and Helium atoms?
a)
The have different numbers of electrons and protons.
b)
They have different numbers of atoms.
c)
They are different.
8.
True or False: A compound often has different properties from the individual elements that compose it.
a)
True
b)
False
9.
What is a mixture?
a)
Where two materials combine with a chemical reaction
b)
where two chemicals react with each other
c)
Combining two or more materials where no chemical reaction occurs
d)
where nothing happens
10.
A milk shake is a(n)
a)
mixture
b)
compound
c)
element
11.
Gold is a(n)
a)
mixture
b)
compound
c)
element
12.
How many electrons does Neon have?
a)
6
b)
2
c)
1
d)
10
13.
What is the atomic number for Oxygen?
a)
7
b)
2
c)
8
d)
1
14.
A pure substance that consists entirely of one type of atom.
a)
Molecule
b)
Atom
c)
Compound
d)
Element
15.
Electrons have what charge?
a)
Postive
b)
Negative
c)
Neutral
d)
Duality
16.
What is the basic unit of matter?
a)
Cell
b)
Atom
c)
Compound
d)
Molecule
17.
How many Hydrogen atoms are in Water (H2O)
a)
1
b)
2
c)
3
d)
4
18.
Two or more elements chemically combined:
a)
an atom
b)
a compound
c)
a mixture
d)
a pure substance
19.
This picture represents which of the following?
a)
Element
b)
Compound
c)
Mixture
20.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
21.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
22.
What is the common name for NaCl?
a)
Sodium
b)
Salt
c)
Water
23.
My name is Mercury, what is my symbol?
a)
Me
b)
My
c)
Hg
d)
HG
24.
My name is Potassium, what is my symbol?
a)
P
b)
Po
c)
K
25.
What elements not are in the compound BeSeKr (4.1)
a)
Krypton
b)
Potassium
c)
Beryllium
d)
Selenium
26.
What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!
a)
noble gases
b)
transition
c)
halogens
d)
borons
27.
Which group contains group contains: chlorine, fluorine, bromine, iodine, astatine?
a)
Group 18-Noble Gases
b)
Group 16-Oxygen Family
c)
Group 17-Halogen Family
d)
Group 15-Nitrogen Family
28.
Is Helium (He) metal, non-metal, or metalloid?
a)
metal
b)
non-metal
c)
metalloid
29.
How many Protons are in an atom of Bismuth?
a)
126
b)
209
c)
83
d)
166
30.
What is the Atomic Mass of Carbon
a)
6
b)
12.01
c)
18.01
31.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
32.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
33.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
34.
Element or compound?
O2
O2
a)
Element
b)
Compound
35.
Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)
three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
36.
Which of the following is a mixture?
a)
Hydrogen
b)
Vinegar
c)
Lemonade mix in water
37.
Shiny, conducts heat and electricity well.
a)
nonmetal
b)
metal
c)
metalloid
38.
The only way to get sugar out of water after it has dissolved is by..
a)
screening
b)
evaporation
c)
filtering
39.
The smallest part of a compound. H20 is an example.
a)
atom
b)
element
c)
molecule
d)
nucleus
40.
What elements are in this compound and how many atoms of each. H2SO4
a)
1 hydrogen, 2 Sulfur, 4 Oxygen
b)
2 Hydrogen, 1 Sulfur, 4 Oxygen
c)
2 Hydrogen, 4 Sulfur, 1 Oxygen
41.
Boron has an atomic number of 5 and an atomic mass of 10.8. How many protons, neutrons, and electrons?
a)
5 protons, 7 electrons, 5 neutrons
b)
6 protons, 5 electrons, 5 neutrons
c)
5 protons, 5 electrons, 6 neutrons
d)
5 protons, 5 electrons, 5 neutrons
42.
They are dull in color, brittle and don't conduct electricity or heat.
a)
Metalloid
b)
Nonmetal
c)
Metal
d)
Stone
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