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WorksheetsUNIT 2 TEST: Properties of Matter (GPB)
Total questions: 25
Worksheet time: 13hrs 30mins
Substances that cannot be broken down into other substances by ordinary chemical or
physical changes are classified as:
elements
compounds
mixtures
Using the rules for selecting symbols for the elements, which of the following could
NOT be a correct symbol for a chemical element?
Ch
CA
A
Cc
The phase change from liquid to gas is called:
sublimation
freezing
condensation
boiling
The phase change from liquid to solid is called:
sublimation
freezing
condensation
boiling
Pure substances may be either __________ or compounds.
mixtures
elements
solutions
heterogeneous materials
___________ is NOT a pure substance.
Sulfur
Air
Sugar
CO2
___________ combine in definite proportions.
Elements
Compounds
Mixtures
Distillation is used to separate liquids with different:
freezing points
solubilities
densities
boiling points
A mixture of sand and water would best be separated by:
magnetism
distillation
filtration
sight
The melting of candle wax is classified as a physical change because it:
produces no new substance
transfers energy
changes the chemical properties of wax
absorbs heat
Compounds can be broken down into their elements by:
physical changes
distillation
chemical changes
densities
Which of the following is an example of a chemical property?
mass
color
reactivity
length
Which of the following is an example of a physical change?
getting a haircut
burning a candle
the formation of acid rain
cooking an egg
Phase changes are examples of _________ changes.
chemical
homogeneous
heterogeneous
physical
Which of the following is an example of an element?
brass
oxygen
rust
water
A special type of homogeneous mixture which is a solid solution made of metals is called
a(n):
element
compound
alloy
density
Which of the following is an example of a heterogeneous mixture?
pizza
brass
water
graphite
Density is defined as the mass per unit of:
length
width
volume
weight
Density is a _________ property.
chemical
physical
homogeneous
heterogeneous
Which of the following is a compound?
oxygen
salt
brass
pizza
Place the steps of the procedure below in the correct order to separate a mixture containing salt, soil, iron filings, and marbles. HINT: the separation of this mixture was shown in the video!
(1) -
(2) -
(3) -
(4) -
What is the density of an object with a mass of 12 grams and a volume of 2.5 cm3? Show all of your work & UNITS = 7 POINTS
A student finds the mass of a marble to be 5.5 grams. He places the marble
into a graduated cylinder with 25.0 mL of water, and the water level rises to 27.0 mL. What is the density of the marble? HINT: this is a 2-step problem: you need to calculate one of the measurements (volume) that you will use in the density equation. Show all of your work & UNITS = 10 POINTS
The density of iron is 7.9 g/cm3. What volume of iron would have a mass of 14.0 g? (HINT: like the examples we completed as a class!) Show all of your work & UNITS = 7 POINTS
A 35 gram block has a density of 4.0 g/cm3. The block has length of 3.0 cm, and
a width of 1.5 cm. What is the height of the block? (like Example #8, Density WS #2!) HINT: this is a 2-step problem: Step 1 - use the correct "arrangement" of the density equation to solve for a variable that you can use in the volume equation. Step 2 - then use the volume equation (V = l x w x h) and your calculated value from the first step to solve for height by applying algebra. Show all of your work & UNITS = 11 POINTS
