Worksheetschemistry year 7
Total questions: 49
Worksheet time: 27mins
Name
Class
Date
1.
Valence electrons are:
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
2.
Ions are:
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
3.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
4.
Negative ions form when atoms _________ valence electrons.
a)
lose
b)
gain
c)
share
5.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
6.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
7.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
8.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
9.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
10.
True or False? Neutrons have a negative charge
a)
True
b)
False
11.
a)
Nucleus, positive
b)
Nucleus, negative
c)
Nucleus, neutral
d)
Electron Cloud, positive
12.
a)
Nucleus, positive
b)
Nucleus, negative
c)
Nucleus, neutral
d)
Electron Cloud, positive
13.
a)
Electron Cloud, positive
b)
Nucleus, negative
c)
Electron Cloud, negative
d)
Electron Cloud, neutral
14.
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons only
15.
a)
Protons
b)
Neutrons
c)
Electrons
16.
Because it contains...
a)
Protons
b)
Electrons
c)
Neutrons
17.
a)
Protons and Neutrons
b)
Neutrons and Electrons
c)
Protons and Electrons
18.
a)
Protons and Neutrons
b)
Neutrons and Electrons
c)
Protons and Electrons
19.
a)
Protons
b)
Neutrons
c)
Electrons
20.
a)
Number of Protons
b)
Number of Electrons
c)
Number of Neutons
d)
Number of Protons and Neutrons
21.
a)
Number of Protons
b)
Number of Electrons
c)
Number of Neutons
d)
Number of Protons and Neutrons
22.
a)
Electrons in the outer energy level
b)
Electrons in the first energy level
c)
Electrons in an atom
23.
a)
number of valence electrons
b)
number of protons
c)
number of electrons
d)
number of neutrons
24.
a)
Group Number
b)
Period Number
c)
Atomic Number
d)
Atomic Mass
25.
Hint: Group 18 is most stable
a)
8 Valence Electrons
b)
1 Valence Electrons
c)
7 Valence Electrons
d)
4 Valence Electrons
26.
a)
Atoms of the same element with different numbers of neutrons
b)
Atoms of the same element with different numbers of electrons
c)
Atoms of the same element with different numbers of protons
27.
a)
Protons + Neutrons
b)
Protons + Electrons
c)
Electrons + Neutrons
28.
a)
Protons + Electrons
b)
Atomic Number - Mass
c)
Mass - Atomic Number
29.
Be is the chemical symbol for
a)
Boron
b)
Sodium
c)
Carbon
d)
Beryllium
30.
Be is the chemical symbol for
a)
Boron
b)
Sodium
c)
Carbon
d)
Beryllium
31.
Aluminium is abbreviated:
a)
Al
b)
A
c)
Am
d)
Alu
32.
The chemical symbol for oxygen is
a)
O
b)
Ox
c)
Xe
d)
OO
33.
The 7th Element on the periodic table
a)
Helium
b)
Nitrogen
c)
Oxygen
d)
Sulfur
34.
What is the chemical symbol for Boron?
a)
Be
b)
Bo
c)
Bs
d)
B
35.
Li is the chemical symbol for
a)
Lanthanum
b)
Lutetium
c)
Lithium
d)
Lateium
36.
C is the chemical symbol for
a)
Calcium
b)
Carbon
c)
Copper
d)
Cadmium
37.
The chemical symbol for Fluorine
a)
F
b)
Fl
c)
Fe
d)
K
38.
The symbol Si represents
a)
silicon
b)
scandium
c)
sulphur
d)
selenium
39.
Element # 1 is...
a)
Hydrogen (H)
b)
Helium (He)
c)
Lithium (Li)
d)
Beryllium (Be)
40.
Which picture represents Aluminium?
a)
b)
c)
d)
41.
The 17th element keeps swimming pool water clean. The other three EXPLODE in water. Choose the safe option.
a)
b)
c)
d)
42.
What is the symbol for CALCIUM?
a)
C
b)
Cl
c)
Ca
d)
Cm
43.
What is the chemical symbol for Nitrogen?
a)
N
b)
Ne
c)
No
d)
Ni
44.
The right name of the element whose symbol is Be is:
a)
Bellyrium
b)
Beryllium
c)
Belirio
d)
Belyrium
45.
Helium (He) is the
a)
2nd element
b)
6th element
c)
13th element
d)
17th element
46.
Which one ISN'T a real element from the first 20?
a)
Sodium
b)
Magnesium
c)
Argon
d)
Comicon
47.
The 19th element regulates fluid balance, muscle contractions and nerve signals. You can get it from bananas!
a)
Potassium
b)
Calcium
c)
Flouride
d)
Helium
48.
Ar
a)
argentium
b)
argon
c)
gold
d)
arsenic
49.
K
a)
kalium
b)
pottassium
c)
potassium
d)
phosphorus
100 %
