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WorksheetsElements and Compounds 2
Total questions: 50
Worksheet time: 49mins
Name
Class
Date
1.
Baking a cake by mixing flour, sugar, chocolate powder, eggs, and milk, and then heating them in the oven.
a)
Chemical Change
b)
Physical Change
2.
Which of the following IS a chemical change
a)
using chalk
b)
water freezing
c)
slicing cheese
d)
digestion
3.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
4.
what is digestion?
a)
body function
b)
chemical change
c)
physical change
5.
Is glass breaking a chemical or phyiscal change?
a)
chemical
b)
physical
6.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
7.
Is a a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
8.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
9.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
10.
A chemical change
a)
doesn't really change much.
b)
creates a new substance
c)
is a change in the state of matter
11.
A physical change is...
a)
a change that doesn't change the identity
b)
a change that makes something new.
c)
a chemical reaction
12.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
13.
The molecules in the picture are tightly held together with little movement. They have shape and energy. Therefore, the picture represents _________.
a)
solid
b)
liquid
c)
gas
d)
plasma
14.
If the tops were removed from the cylinders, the following would happen:
a)
The solid would fly out of the container
b)
The liquid would fly out of the container.
c)
The gas would fly out of the container.
d)
They ALL would fly out of the container.
15.
What does this picture represent?
a)
solid
b)
liquid
c)
gas
d)
plasma
16.
The change of state from a liquid to a solid
a)
freezing
b)
melting
c)
evaporation
d)
boiling
17.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
18.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
19.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
20.
Which of the following is a pure substance?
a)
CO
b)
C02
c)
Co
d)
H2O
21.
Which of the following is a pure substance?
a)
O2
b)
Al2CO5
c)
C6H12O6
d)
SiO2
22.
Which of the following atomic symbols for bromine is written correctly?
a)
bR
b)
BR
c)
Br
d)
br
23.
Which of the following chemical formulas represents a compound?
a)
C3
b)
O2
c)
CH3CHO
d)
H2
24.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
25.
What is krypton?
a)
element
b)
compound
c)
mixture
26.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
27.
Which one can be found on the periodic table?
a)
Compound
b)
Element
28.
Which item on this element square is the chemical symbol?
a)
Copper
b)
29
c)
Cu
d)
63.546
29.
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
30.
A pure substance containing only one kind of atom.
a)
element
b)
mixture
c)
compound
31.
These are found on the Periodic Table.
a)
elements
b)
mixtures
c)
compounds
32.
Examples are water (H2O) and carbon dioxide (CO2).
a)
elements
b)
mixtures
c)
compounds
33.
What is the chemical symbol for Titanium
a)
Ti
b)
TI
c)
Tm
d)
Sn
34.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
35.
A new compound has been discovered. Here is the chemical formula:
CHOFeNaNPb
How many elements are in this compound?
CHOFeNaNPb
How many elements are in this compound?
a)
5
b)
6
c)
7
d)
10
36.
Two clear liquid chemicals are mixed and a solid substance forms, this is an example of what?
a)
Temperature change
b)
Precipitate
c)
Gas production
d)
Odor change
37.
How many different elements are in this chemical formula: C2H2ClK3
a)
6
b)
8
c)
2
d)
4
38.
Which elements are in this compound: H2O2BKFe
a)
Hydrogen Obsidian Balognium Fernisium
b)
Hydrogen Oxygen Boron Potassium Iron
c)
Hydrogen Oxygen Krypton Felicium
39.
Are there any compounds on the periodic table
a)
yes there are many
b)
no because only elements are on the periodic table
c)
I think they are?
40.
Is the following an element or compound: CaCO3?
a)
Element
b)
Compound
c)
Both
d)
Neither
41.
Is the following an element or compound: Co?
a)
Element
b)
Compound
c)
Both
d)
Neither
42.
Is the following an element or compound: SiO2?
a)
Element
b)
Compound
c)
Both
d)
Neither
43.
Compounds are represented by a...
a)
Capital Letter
b)
Chemical symbol
c)
Chemical formula
d)
Chlorine
44.
How many different elements are represented in the compound?
Fe3O4
Fe3O4
a)
2
b)
3
c)
1
d)
4
45.
How many different elements are represented in the compound?
Fe3O4
Fe3O4
a)
2
b)
3
c)
1
d)
4
46.
How many atoms of oxygen (O) in Ag2O?
a)
1
b)
2
c)
3
d)
4
47.
How many atoms in the compound?
PH3
a)
1
b)
2
c)
3
d)
4
48.
How many atoms in the compound?
Fe3O4
a)
2
b)
4
c)
7
d)
8
49.
How many atoms in the compound?
N2O
a)
5
b)
2
c)
3
d)
4
50.
How many atoms in the compound?
Na3PO4
a)
5
b)
6
c)
7
d)
8
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