WorksheetsYear 10 Chemical World
Total questions: 20
Worksheet time: 16mins
Name
Class
Date
1.
What element is Na?
a)
Sodium
b)
Nanium
c)
Silicon
d)
Nastium
2.
A particle consisting of two or more atoms joined together is a ________
a)
element
b)
molecule
c)
compound
d)
sub atomic particle
3.
What is the chemical symbol for Calcium?
a)
C
b)
Ca
c)
Cm
d)
Ci
4.
Which subatomic particles are located in the nucleus?
a)
Electrons only
b)
Electrons and neutrons
c)
Protons and electrons
d)
Protons and neutrons
5.
Which of the following is NOT a property of metals?
a)
malleable
b)
lustre
c)
brittle
d)
good electrical conductivity
6.
What sub atomic particle orbits around the nucleus?
a)
Proton
b)
Neutron
c)
Atom
d)
Electron
7.
Which of the following is correct?
a)
Proton = positive, neutron = negative, electron = neutral
b)
Proton = positive, neutron = neutral, electron = negative
c)
electron = positive, neutron = neutral, proton = negative
d)
neutron = negative, proton = neutral, electron = positive
8.
Elements in the periodic table ______ in ___________ from the simplest element to the most complex.
a)
increase, atomic number
b)
increase, neutrons
c)
decrease, atomic number
d)
decrease, atomic mass
9.
What is the total number of atoms present in the formula H2SO4 ?
a)
1
b)
3
c)
6
d)
7
10.
A group on the periodic table is arranged ________ where as, a period is arranged ________.
a)
horizontally, vertically
b)
vertically, horizontally
11.
An atom has an atomic number of 17. How many electrons would there be on each shell? (From inner to outer shell)
a)
2, 10, 5
b)
8, 8, 1
c)
2, 8, 7
d)
8, 7, 2
12.
Which of the following is an example of a noble gas?
a)
Oxygen
b)
Hydrogen
c)
Nitrogen
d)
Neon
13.
Which is true about the mass and charge of a proton?
a)
similar to neutron, negative
b)
similar to electron, positive
c)
similar to neutron, positive
d)
similar to electron, negative
14.
A Ph reading of 3 would be ______
a)
basic
b)
acidic
c)
alkaline
d)
neutral
15.
The compound NaCl (Sodium Chloride) is commonly known as ______
a)
bleach
b)
fertiliser
c)
table salt
d)
window cleaner
16.
How many neutrons does this element have?
a)
10
b)
9
c)
19
d)
0
17.
How many electrons does this element have?
a)
10
b)
5
c)
11
d)
0
18.
The Ph scale ranges from ______
a)
1-7
b)
0-14
c)
1-14
d)
1-20
19.
_______ are the elements or compounds that are formed or produced in a chemical reaction.
a)
polymers
b)
bonds
c)
reactants
d)
products
20.
The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.
a)
True
b)
False
100 %
