WorksheetsScience Test Ch 7
Total questions: 14
Worksheet time: 7mins
Name
Class
Date
1.
What is the most common element in living things
a)
Nitrogen
b)
Calcium
c)
Oxygen
d)
Carbon
2.
How many subscripts are in the chemical formula for water?
a)
3
b)
2
c)
4
d)
1
3.
What is a mixture?
a)
A sheep that is called mixture!
b)
Two different element’s atom combined!(Chemically combined)
c)
Two different element’s atom combined!(Physically combined)
d)
All the Above
4.
The periodic table is separated into what three groups?
a)
Nice, Mean, Fancy
b)
Rocks, Metals, Conductors
c)
Metal, Metaloids, Nonmetals
d)
Insulator, Solute, Solvent
5.
What is weight?
a)
A substance
b)
Measure of the pull of gravity on an object
c)
Amount of matter in an object
6.
What are the physical properties?
a)
volume
b)
mass
c)
weight
d)
all the above
7.
What is a solution?
a)
A physical combination of two or more substances.
b)
A chemical combination of two or more elements
c)
A mixture of carbon and hydrogen
d)
When a substance dissolves in another
8.
How many elements are on the earth?
a)
100,100,100,100
b)
118
c)
10
d)
1,000,000,000,000,000
9.
What elements are hydrocarbons made of?
a)
Hydrogen and carbon
b)
Water, hydrogen, and Oxygen
c)
Oxygen and plastic strings
d)
Compounds, molecules, and atoms mixed together
10.
What is a compound?
a)
A substance formed by the chemical combination of 2 or more substances
b)
A chemical comb
c)
matter
d)
my friend
11.
what are metalloids
a)
molecules
b)
metal rockets
c)
a man
d)
A very small group of elements that have some properties of metals and some properties of nonmetals
12.
Condensation occurs when a substance changes from .....
a)
liquid to gas
b)
ice to water
c)
gas to liquid
d)
water to ice
13.
What is one example of sublimation?
a)
Dry ice changing into gas
b)
submarine going into the ocean
14.
What are atoms made of?
a)
a tom
b)
lithium
c)
hydrogen and oxygen
d)
electrons, protons and neutrons
100 %
