Download Test

Test
Physical & Chemical Properties
Physical & Chemical Changes
1- What is the measurement of this liquid?
a. 10 milliliters b. 12 grams c. 11.5 milliliters
d. 11.5 grams
2- Which of the following is true of chemical properties?
a. They describe the phase the substance is in.
b. They describe characteristics of a substance such as size,
color, and shape.
c. They explain how the substance reacts with other things
d. They describe what chemical changes the substance is currently going through.
While investigating a new substance, Megan and Tyler recorded the following observations:
The new substance is solid. The new substance forms into thin flat sheets. The new substance is
smooth. The new substance will burn. The new substance looks like it will tear easily.
The new substance looks like it will dissolve in acid easily.
3- Which of their statements would be an inference about a chemical property?
a. The new substance forms into thin flat sheets.
b. The new substance is smooth.
c. The new substance looks like it will tear easily.
d. The new substance looks like it will dissolve in acid easily.
4- A worker at Fairy Godmother’s Factory places 10 mL of water in a test tube and heats the liquid over a
flame for 2 minutes. The liquid boils and escapes as steam. This experiment is a good example of
a. chemical change involving phase changes
b. physical change involving phase changes
c. chemical change involving chemical reactions d. physical change involving chemical reactions
5- Both hydrogen and oxygen are flammable. Water is made up of 2 parts Hydrogen and 1 part
Oxygen. Why doesn’t water burn?
a. Water will burn if you get it hot enough.
b. Because water is a liquid and hydrogen and oxygen are gases.
c. When elements combine physically they form new substances with different properties.
d. When elements combine chemically they form new substances with different properties.
Label the following as a physical property, chemical property, physical change, or chemical change:
6- freezing point
___________________
conducts electricity ___________________________
7- tarnish forming on silver __________________
reacts with chlorine ___________________________
8- firewood burning ________________________
alka seltzer fizzing in water ______________________
9- melting point ___________________________
bursts into flames in presence of air _______________
10- does not conduct heat ___________________
cutting paper into tiny pieces _____________________
11- forms crystals __________________________
ice melting ___________________________________
12- will burn skin __________________________
a firecracker exploding __________________________
Mike and Kylie experimented with several items to see what would happen under different conditions.
Below is the data table they wrote at the conclusion of the experiment.
Steel wool
Paper
Copper wire
Put in water over
night
Rusted
Got soppy
Got wet
Wood splinter
Swelled up with water
Held in candle flame
for 30 seconds
Burned
Burned
Got hot, bent in the
middle
Burned
Connected to the
terminals of a battery
Burned
No change
Got hot, melted in
half
No change
13- Which substance changed chemically under all three conditions?
a. steel wool
b. paper
c. copper wire
d. wood splinter
14- Which substance changed physically under all three conditions?
a. steel wool
b. paper
c. copper wire
d. wood splinter
15- What would be a good conclusion for this experiment?
a. Steel wool is the most reactive.
b. Paper is the most reactive.
b. Copper wire is the most reactive.
d. Wood splinter is the most reactive.
The following data was collected by a group of students as they tested four different types of plastics.
Plastic
Acetone
Flame test
Heat
Crease color
1
No effect
Green color
Softens
None
2
Softened
No change
No change
White
3
No effect
Red color
Softens
None
4
No effect
Green color
Softens
None
16- Which of the plastics might be the same?
a. 1 & 2
b. 2 & 3
c. 3 & 4
17- Which plastic would be best to put in a microwave?
a. 1
b. 2
c. 3
d. 1 & 4
d. 4
18- Which plastic would be unsafe to use to store products that contain acetone?
a. 1
b. 2
c. 3
d. 4
53
19- What does the number at the top of this box from the periodic table indicate?
_____________________________________________________________________
I
20- How many neutrons would be contained in each atom of this element? ____________
126.90
Bonus 4 points:
Make two drawings that show one chemical change and one physical change. Label them.