NEW
Font size
S
M
L
XL
WorksheetsScience Ch 7
Total questions: 21
Worksheet time: 14mins
Name
Class
Date
1.
The combination of two or more elements that form a substance with different properties.
a)
atom
b)
compound
c)
chemical change
2.
Symbols show the elements that are combined to form a compound.
a)
density
b)
chemical change
c)
chemical formula
3.
What is the atomic symbol for sodium?
a)
Na
b)
So
c)
NaCl
d)
S
4.
True or False? Neutrons have a negative charge
a)
True
b)
False
5.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
6.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
7.
Matter always has mass.
a)
true
b)
false
8.
What is the smallest?
a)
worm
b)
molecule
c)
galaxy
d)
atom
9.
Anything that has mass and takes up space is called
a)
heterogeneous
b)
homogeneous
c)
matter
d)
density
10.
Which subatomic particle has a neutral charge?
a)
Proton
b)
Neutron
c)
Electron
11.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
12.
CALCIUM
a)
C
b)
Ca
c)
Cu
d)
Cl
13.
CARBON
a)
C
b)
Ca
c)
Cl
d)
Cu
14.
SODIUM
a)
S
b)
So
c)
N
d)
Na
15.
HYDROGEN
a)
H
b)
He
c)
Hy
d)
Hd
16.
NITROGEN
a)
N
b)
Ne
c)
Ni
d)
Nt
17.
OXYGEN
a)
O
b)
Ox
c)
Oy
d)
Og
18.
The chemical symbol for Helium is
a)
H
b)
Hg
c)
He
d)
O
19.
The chemical symbol for Silicon is
a)
S
b)
Sn
c)
Sc
d)
Si
20.
The two most common elements found in the oceans are. Remember oceans are water.
a)
Sodium and Nitrogen
b)
Oxygen and Aluminum
c)
Iron and Carbon
d)
Oxygen and Hydrogen
21.
What is the chemical symbol for the element Chlorine
a)
C
b)
Cl
c)
cl
d)
Ch
Reset
