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WorksheetsUnit 1 Review
Total questions: 35
Worksheet time: 50mins
Name
Class
Date
1.
Which of the following characteristics is shared by all chemical reactions?
a)
Produce a precipitate
b)
Show a color change
c)
Release heat energy
d)
Form new substances
2.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
3.
A _________ is a substance made of two or more DIFFERENT elements chemically combined.
a)
mixture
b)
compound
c)
substance
4.
What is an example of a Chemical change? Hint: Which one has a sign of a chemical reaction??
a)
Ripped paper
b)
boiled egg
c)
broken egg
d)
sugar in water
5.
Which is a physical change? Hint: Which one does NOT have a sign of a chemical change?
a)
burning match
b)
vinegar in baking soda
c)
melting butter
d)
cooking an egg
6.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
7.
Which property does not change what the substance is?
a)
chemical
b)
physical
8.
What can scratch Talc?
a)
Gypsum
b)
Diamond
c)
Quartz
d)
All of them
9.
Using this scale, which mineral can scratch a Drill bit?
a)
Talc
b)
Topaz
c)
Corundrum
d)
Quartz
10.
Using this scale, which mineral can scratch fluorite?
a)
Talc
b)
Gypsum
c)
Apatite
d)
Calcite
11.
Can a penny scratch fluorite?
a)
Yes
b)
No
12.
An object should float in a liquid if it is
a)
Denser than the liquid
b)
Less dense than the liquid
c)
Lighter than metal
d)
Shaped like a ball
13.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
14.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
15.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
16.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
17.
Which item on this element square is the chemical symbol?
a)
Copper
b)
29
c)
Cu
d)
63.546
18.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas, bubbles
d)
dissolving
19.
Is gatorade powder dissolving in water physical or chemical change?
a)
Physical
b)
Chemical
20.
Is sharpening a pencil a physical or chemical change?
a)
Physical
b)
Chemical
21.
Is copper tarnishing a physical or chemical change?
a)
Physical
b)
Chemical
22.
Which of these grouping of elements could have the characteristic of brittle?
a)
Metal
b)
Nonmetal
23.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
24.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
25.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
26.
Non-metals are good conductors of heat and electricity.
a)
TRUE
b)
FALSE
27.
How would this element be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Metamorphic
28.
Elizabeth was examining elements and their physical properties. She described an element is her science journal as having no shine, an insulator, and very brittle. What would this element be a metal, nonmetal, or metalloid?
a)
metal
b)
nonmetal
c)
metalloid
29.
A student is given a sample of an unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a nonmetal. He discovered that the unknown element conducted some heat and electricity, had a shiny luster, and broke easily. This element is most likely a
a)
metal
b)
nonmetal
c)
metalloid
d)
cannot be determined
30.
If an element is shiny, malleable, and a poor conductor of electricity, it is most likely a -
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Gas
31.
Paul wants to identify a mineral. He rubs a corner of the mineral across a white tile and records the color of the mark. What property is Paul testing?
a)
cleavage
b)
color
c)
luster
d)
streak
32.
A scientist is investigating an unknown mineral. As a safety precaution, what should he NEVER do in this investigation?
a)
Us another mineral to scratch it.
b)
See if the mineral leaves a streak.
c)
Compares its taste to another mineral.
d)
Check to see if the mineral is magnetic.
33.
Which is TRUE about all minerals?
a)
They all have the same texture.
b)
They are all the same size and shape.
c)
They can be identified by their properties.
d)
They can be identified by their color only.
34.
Julia scratches a mineral with a penny. Why would she do this?
a)
To feel the mineral's texture
b)
To see if the penny and the mineral are the same color
c)
To compare the shape of the penny to the mineral
d)
To figure out how hard the mineral is
35.
What does a mineral's luster describe?
a)
how it is formed
b)
how light reflects off of it
c)
how difficult it is to scratch
d)
the color
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