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WorksheetsClassifying Matter
Total questions: 20
Worksheet time: 20mins
How would you classify a container of muddy water?
homogeneous mixture
heterogeneous mixture
a compound
a solution
Which of the following is a physical change?
folding a piece of paper in half
burning a piece of paper
an explosion
a rotting banana
Which of the following is a chemical change?
melting an ice cube
freezing water
evaporating water
mixing iron and water to form rust
Which substance is most likely classified as a colloid?
salt water
milk
sandy water
paint
Based on the chart, which substance is a liquid at -175oC?
ethanol
hexane
methane
methanol
Which of the following represents a chemical change?
mixing two substances to create a gas
melting a solid piece of metal
measuring the densities of liquid water and ice
dissolving salt in water
Why does your hand feel cold when holding an ice cube?
heat flows from the ice cube to your hand
heat flows from your hand to the ice cube
cold flows from the ice cube to your hand
cold flows from your hand to the ice cube
What happens to molecules of water as they are heated?
the gain kinetic energy
they lose kinetic energy
they lose thermal energy
they move slower
In a solution of salt water, NaCl + H2O, what is considered the solvent?
the salt (NaCl)
the water (H2O)
the Oxygen (O)
The Hydrogen (H2)
Which of the following is NOT considered a mixture?
a compound
a solution
a colloid
a suspension
Which of the following is an example of a chemical property?
malleability
density
flammability
hardness
Matter that is composed of only 1 type of atom, and can only be spearated by nuclear means, is classified as a(n)...
compound
solution
suspension
element
A physical change does NOT alter the composition of a substance.
true
false
When matter absorbs energy, it is called...
freezing
exothermic
endothermic
hypothermic
How many grams of KNO3 can be added to 100 grams of water at 50oC before the solution becomes saturated?
10 grams
50oC
20 grams
80 grams
Matter changes phases from solid, liquid, and gas due to a change in...
chemical properties
solutions
mass
kinetic energy
As molecules are exposed to cooler temperatures, they...
slow down
gain energy
speed up
change their composition
What kind of mixture separates into layers over time?
solution
compound
suspension
colloid
What chemical property describes how well a substance combines with other substances?
flammability
reactivity
malleability
conductivity
What is the name of the phase change where solid matter turns directly into a gas?
vaporization
sublimation
condensation
melting
