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Worksheetsbasics in chemistry
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
what is the symbol of Carbon element
a)
S
b)
C
c)
Si
d)
Ca
2.
the organic chemistry is the chemistry of
a)
Metals
b)
Non metals
c)
Carbon
d)
live
3.
what is the name of H2O
a)
water
b)
oxide
c)
hydrogen
d)
calcium
4.
is it possible to produce a solution of water and oil
a)
yes
b)
No
5.
The milk contains 7% w/v proteins. What is the amount of proteins in 1 lt milk
a)
70 gr
b)
70 ml
c)
35 gr
d)
140 ml
6.
A positively charged particle is a(n)
a)
proton
b)
neutron
c)
electron
d)
positron
7.
Atoms of the same element that have different masses are called
a)
moles
b)
isotopes
c)
nuclides
d)
neutrons
8.
An atom of calcium has 20 protons and 20 neutrons. What is its mass number?
a)
20
b)
40
c)
60
d)
80
9.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
10.
This is a
a)
chemical symbol
b)
chemical sign
c)
chemical location
d)
chemical formula
11.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
12.
Which is not an example of chemical changes
a)
Burning Wood
b)
Dyeing Hair
c)
Digesting Food
d)
Chopping wood
13.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
14.
ph 7.0 : neutral :: ph 8.8 : _______ ?
a)
acid
b)
base
c)
neutral
d)
polar
15.
Which liquid is the most dense?
a)
oil
b)
water
c)
syrup
d)
plastic bottle
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