Worksheetsmolecules.atoms.elements
Total questions: 28
Worksheet time: 26mins
Name
Class
Date
1.
What Element is this?
a)
Oxygen
b)
Nitrogen
c)
Calcium
d)
Carbon
2.
What element is this?
a)
Nickel
b)
Niobium
c)
Arsenic
d)
Argon
3.
What is the atomic number of this element?
a)
10
b)
20.179
c)
Ne
d)
Neon
4.
What is the atomic weight of this element?
a)
10
b)
20.179
c)
Ne
d)
Neon
5.
What is the atomic mass of this element?
a)
10
b)
20.179
c)
Ne
d)
Neon
6.
What is the symbol of this element?
a)
10
b)
20.179
c)
Ne
d)
Neon
7.
What is the atomic number of this element?
a)
81
b)
22
c)
47.88
d)
204.383
8.
What is the name of this element?
a)
Gold
b)
Aurium
c)
Australium
d)
Silver
9.
What is the atomic weight of this element?
a)
46
b)
106.42
c)
82
d)
207.2
10.
Air is a compound.
a)
True
b)
False
11.
Composition of compounds can be separated.
a)
True
b)
False
12.
Compounds are made up of two or more atoms physically combined.
a)
True
b)
False
13.
The properties of the elements that make up a compound are usually very similar to the compound itself.
a)
True
b)
False
14.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
15.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
16.
Does this picture show a compound?
a)
No
b)
Yes
17.
Which of the substances below is a compound?
a)
ink
b)
air
c)
oxygen
d)
salt
18.
In physical changes, substances might change in __________ but not in __________.
a)
appearance, composition
b)
volume, state of matter
c)
texture, color
d)
weight, mass
19.
What happens to atoms after a chemical change?
a)
They remain in the same place.
b)
They become bigger.
c)
They link up in different ways.
d)
They dissolve to form a mixture.
20.
Which of the following properties can change during a physical change?
a)
shape
b)
pH level
c)
flammability
d)
reactivity
21.
Which of the following is an example of a precipitate?
a)
liquid evaporating into gas
b)
a solid formed from a frozen liquid
c)
a chunk solid formed from two liquids combining
d)
a liquid solution that contains two substances
22.
A physical change can sometimes result in a color change. Which of the following situations show this?
a)
Milk turns yellow when it spoils.
b)
Dough becomes darker when it is baked into cake.
c)
A red candy dissolves and turns water pink.
d)
A match turns black when it is burned.
23.
what is burning?
a)
physical change
b)
physical property
c)
chemical change
d)
chemical property
24.
which one is a chemical property?
a)
odor
b)
combustibility
c)
solubility
d)
all of the above
25.
what is condensing?
a)
physical property
b)
chemical property
c)
chemical change
d)
physical change
26.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
27.
Any change that alters a substance without changing it into another substance is a(n) ____________ change.
a)
Physical
b)
Chemical
28.
____________ is anything that has mass and takes up space.
a)
Matter
b)
An Element
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