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WorksheetsUnit 1 Exam Review
Total questions: 40
Worksheet time: 40mins
If a laboratory fire erupts, immediately
notify your instructor.
run for the fire extinguisher.
throw water on the fire.
open the windows.
Approved eye protection devices (such as goggles) are worn in the laboratory
to avoid eye strain.
to improve your vision.
only if you don’t have corrective glasses.
any time chemicals, heat or glassware are used.
After completing an experiment, all chemical wastes should be
left at your lab station for the next class.
disposed of according to your instructor’s directions.
dumped in the sink.
taken home.
You have been injured in the laboratory (cut, burn, etc.). First you should
visit the school nurse after class.
see a doctor after school.
tell the science instructor at once.
apply first aid yourself.
Long hair in the laboratory must be
cut short.
held away from the experiment with one hand.
always neatly groomed.
tied back or kept entirely out of the way with a hair band, hairpins, or other confining device.
Horseplay or practical jokes in the laboratory are
always against the rules.
okay.
not dangerous.
okay if you are working alone.
All chemicals in the lab are to be considered dangerous.
True
False
Return all unused chemicals to their original containers.
True
False
All unauthorized experiments are prohibited.
True
False
It’s okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.
True
False
What does a solid look like on the macro scale?
Definite volume and definite shape
Definite volume but not a definite shape
Not a definite volume, but a definite shape
Neither a definite shape nor a definite volume
What does a liquid look like on the macro scale?
Definite volume and definite shape
Definite volume but not a definite shape
Not a definite volume, but a definite shape
Neither a definite shape nor a definite volume
What does a gas look like on the macro scale?
Definite volume and definite shape
Definite volume but not a definite shape
Not a definite volume, but a definite shape
Neither a definite shape nor a definite volume
Which of the following shows a solid at the atomic scale?
Which of the following shows a liquid at the atomic scale?
Which of the following shows a gas at the atomic scale?
Which of the following are intensive physical properties? (select all that apply)
Luster
Length
Ability to rust
Ductility
Which of the following are extensive physical properties? (select all that apply)
Mass
Reactivity
Flammability
Temperature
Which of the following are chemical properties? (select all that apply)
Taste
Corrosiveness
Toxicity
Volume
Which of the following are intensive physical properties? (select all that apply)
Melting point
Density
Hardness
Weight
A block's mass is 6 g and its volume is 2 mL. Calculate the block's density.
3 g/mL
12 g/mL
8 g/mL
4 g/mL
A US nickel has a mass of 5.000 grams and a volume of 0.689 mL. What is the density of a US nickel?
7.26 g/mL
8.45 g/mL
6.69 g/mL
8.91 g/mL
A soda can has a volume of 355 mL and a mass of 384 g. Calculate the density of this soda can.
1.08 g/mL
0.924 g/mL
0.739 g/mL
0.136 g/mL
Which of the following properties would be useful in identifying a substance on their own?
Mass
Volume
Weight
Density
Evaporating water is an example of what kind of property change?
chemical change
physical change
extensive change
intensive change
Burning a piece of paper is an example of what kind of property change?
chemical change
physical change
fire change
heat exchange
What evidence is available to determine the type of property change?
new substance is formed
color change
light is produced
shape change
temperature change
Which of the following is evidence of a chemical change? (Pick all that apply)
A change in state of matter
Color change
Light is produced
Shape change
What kind of property change does the water triple point go through?
chemical change
intensive change
extensive change
physical change
Which of the following is an example of a chemical change?
What kind of change is a moldy apple going through?
physical change
chemical change
intensive change
extensive change
Which of the following BEST describes trail mix?
element
compound
heterogeneous mixture
homogeneous mixture
Which of the following BEST describes copper?
element
compound
heterogeneous mixture
homogeneous mixture
Which of the following BEST describes milk?
element
compound
heterogeneous mixture
homogeneous mixture
Which of the following BEST describes table salt (NaCl)?
element
compound
heterogeneous mixture
homogeneous mixture
Which of the following BEST describes the alloy stainless steel?
element
compound
heterogeneous mixture
homogeneous mixture
Which of the following physical properties would be the MOST helpful in separating a mixture of steel bb's and sand?
Magnetism
Solubility in water
Melting point
Taste
Which of the following physical properties would be the MOST helpful in separating a mixture of salt and sand?
Magnetism
Solubility in water
Melting point
Taste
What is the formula for density?
Which of the following is a heterogeneous mixture? (mark all that apply)
