NEW
Font size
S
M
L
XL
WorksheetsElements and Compounds
Total questions: 67
Worksheet time: 52mins
Name
Class
Date
1.
The one or two letters used to represent elements
a)
Yield sign
b)
Coefficient
c)
Chemical Symbol
d)
Subscript
2.
Element or compound?
H2O
H2O
a)
element
b)
compound
3.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
24
4.
A physical change is?
a)
It changes the object into something different
b)
Objects or substances undergo a change that does not change their chemical composition
c)
it is just like a chemical reaction
d)
Paper burning
5.
Element or compound?
O2
O2
a)
Element
b)
Compound
6.
A chemical change is?
a)
a shoe lace cut in half
b)
doesn't change anything
c)
changes the look of an object
d)
change that results in the formation of new chemical substances
7.
How many Hydrogen atoms are in H2O?
a)
zero
b)
one
c)
two
d)
three
8.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
9.
The small number that is written below the symbol and shows how many atoms of each element is present.
a)
Compound
b)
Molecule
c)
Coefficient
d)
Subscript
10.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
11.
Which of the following is NOT an element?
a)
H2O
b)
H2
c)
O2
d)
Au
12.
Sulfuric Acid is made of two Hydrogen atoms, one Sulfur atom, and four Oxygen atoms, What is its chemical formula?
a)
2H4SO
b)
H4S2O
c)
H2SO4
d)
H2S2O4
13.
In the chemical equation of Photosynthesis a product formed is glucose C6H12O6. How many different elements are in glucose.
a)
24
b)
3
c)
6
d)
12
14.
Na is the element sodium's
a)
Formula.
b)
compound.
c)
Symbol.
15.
All of the following are characteristics of carbon dioxide. Which characteristic makes it a compound?
a)
vital to life on earth
b)
Gas at room temperature
c)
Made of two different elements
16.
Which one of these is a compound?
a)
Oxygen
b)
Water
c)
Copper
17.
Is NaCl an element or compound?
a)
Element
b)
Compound
c)
Neither
18.
What is the name for the smallest particle of an element that maintains the chemical identity of the element?
a)
Compound
b)
Atom
c)
nitrogen
19.
What is a substance that can't be broken down into simpler substances?
a)
Compound
b)
Element
c)
Mixture
20.
Which one of these elements is NOT one of the most abundant elements in plants and animals?
a)
Hydrogen
b)
Oxygen
c)
Iron
21.
Which list contains elements that make up most living things on Earth?
a)
Hydrogen, Oxygen, and Silicon
b)
Oxygen, Sulfur, and Carbon
c)
Carbon, Hydrogen, and Oxygen
22.
What type of substance is gold (Au)?
a)
Element
b)
Compound
c)
Mixture
23.
Which of the following is NOT a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
24.
Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
25.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
26.
Which of the following an element?
a)
Carbonic Acid
b)
Copper
c)
Iron and Copper
d)
Water
27.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
28.
All LIVING things on earth are part of the....
a)
Biosphere
b)
Lithosphere
c)
Hydrosphere
d)
Atmosphere
29.
What main system (sphere) do you interact with when you are exploring an underwater cave?
a)
Hydrosphere
b)
Lithosphere
c)
Atmosphere
d)
Biosphere
30.
This is part of the....
a)
Geosphere
b)
Atmosphere
c)
Hydrosphere
d)
Cryosphere
31.
This sphere contains all Earth's water in the ground, on the surface and the air
a)
Geosphere
b)
Hydrosphere
c)
Atmosphere
d)
Biosphere
32.
This sphere contains ALL LIFE on Earth
a)
Geosphere
b)
Hydrosphere
c)
Atmosphere
d)
Biosphere
33.
This sphere contains the AIR around the Earth
a)
Geosphere
b)
Hydropshere
c)
Atmosphere
d)
Biosphere
34.
This word comes from the Greek word LIFE
a)
Geo
b)
Bio
c)
Hydro
d)
Atmo
35.
This word comes from the Greek word WATER
a)
Geo
b)
Bio
c)
Hydro
d)
Atmo
36.
This word comes from the Greek word AIR
a)
Geo
b)
Bio
c)
Hydro
d)
Atmo
37.
All weather takes place in the
a)
Geosphere
b)
Atmosphere
c)
Hydrosphere
d)
Biosphere
38.
Oceans, rivers, lakes and even glaciers belong to this sphere
a)
Atmosphere
b)
Hydrosphere
c)
Biosphere
d)
Geosphere
39.
Birds, deer, grass and all living things belong to this sphere
a)
Atmosphere
b)
Hydrosphere
c)
Biosphere
d)
Geosphere
40.
This sphere includes the continents, the ocean floor, all the rocks on the surface, and all of the sand in the deserts.
a)
Hydrosphere
b)
Biosphere
c)
Atmosphere
d)
Geosphere (Lithosphere)
41.
Body of air surrounding our planet.
a)
Hydrosphere
b)
Biosphere
c)
Atmosphere
d)
Geosphere
42.
When living things breathe, they interact with which of Earth's spheres?
a)
Geosphere
b)
Hydrosphere
c)
Atmosphere
d)
Biosphere
43.
Water evaporating from the surface of a lake moves from the...
a)
Atmosphere to the geosphere
b)
Geosphere to the hydrosphere
c)
Hydrosphere to the atmosphere
d)
Atmosphere to the hydrosphere
44.
When a plants takes carbon dioxide from the air which two spheres are interacting?
a)
Biosphere and atmosphere
b)
Geosphere and atmosphere
c)
Hydrosphere and atmosphere
d)
Atmosphere and atmosphere
45.
a)
1
b)
2
c)
3
d)
4
46.
a)
1
b)
2
c)
3
d)
4
47.
a)
1
b)
2
c)
3
d)
4
48.
Which one has more than one type of atom in it
a)
Element
b)
Compound
49.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
50.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
51.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
52.
Is in simplest form and cannot be broken down
a)
Element
b)
Compound
c)
Mixture
53.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
54.
What is sugar?
a)
element
b)
compound
c)
mixture
55.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
56.
Which of the following atomic symbols is written correctly?
a)
OH
b)
oH
c)
fe
d)
H
57.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
58.
All living and once living things on Earth contain this element.
a)
Carbon
b)
Gold
c)
Chlorine
d)
Potassium
59.
What is krypton?
a)
element
b)
compound
c)
mixture
60.
Which statement best describes an element?
a)
made from mixture
b)
thousands in the world
c)
pure, made of only one atom
d)
can be separated
61.
Which of the following substances is a compound?
a)
oxygen
b)
salt
c)
helium
62.
Two or more materials that combine chemically form a(n) _____________.
a)
mixture
b)
compound
c)
physical
63.
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 of two different elements.
c)
given off by green plants.
64.
A section of the Periodic Table of Elements is provided. What is the chemical symbol for magnesium?
a)
Mn
b)
Magnesium
c)
Mg
d)
12
65.
The oceans are mostly made up of which two elements?
a)
carbon and hydrogen
b)
calcium and silicon
c)
hydrogen and oxygen
66.
What is the atomic mass of Neon?
a)
10
b)
20.18
c)
10.18
d)
20
67.
Chemical Symbols represent
a)
the number of atoms in an element
b)
the number of electrons and protons in an element
c)
the number of neutrons in an element
d)
the name of an element
Reset
