WorksheetsChemistry Review
Total questions: 30
Worksheet time: 20mins
Which of the following is not evidence of a chemical reaction?
temperature change
change in smell
color change
bubbles
Substance that is shiny, malleable, and a good conductor of electricity
Nonmetal
Ductile
Metalloid
Metal
Substance that is dull, can't be pulled into a wire, and does not conduct electricity
Metal
Streak
Nonmetal
Metalloid
Substance that can be a solid or gas, CANNOT be drawn into a wire, and has a varying ability to conduct heat and electricity?
Gas
Metalloid
Metal
Nonmetal
Element
Compound
Homogeneous Mixture
Heterogeneous Mixture
H2 is an example of a(n):
Element
Compound
Monkey
Mixture
What is the density of a substance that has a mass of 30g and a volume of 6mL?
24 g/mL
5 g/nL
36 g/mL
180 g/mL
How many elements are in KClO4
3
4
2
5
True or False: Metalloids are also known as semiconductors
True
False
What two elements are the most abundant in the earth's atmosphere?
Oxygen
Sulfur
Nitrogen
Argon
Sodium (Na) and Chlorine (Cl) come together to make sodium chloride (NaCl), this is:
salt
powder
gas
sugar
What elements are in chalk? The formula is CaCO3
Calcium
Nitrogen
Carbon
Oxygen
True or False: Non-metals are classified based on physical properties.
True
False
A green powder is heated & a gas is given off while it turns to a black solid. This describes
Physical Change
Chemical Change
Change in State
Change in Temperature
The formation of a solid is called:
Solidification
Freezing
Precipitate
Solubility
Identify what type of change happening in the picture below...
Chemical Change
Physical Change
Endothermic Reaction
Exothermic Reaction
Which of the following is an example of a physical change?
A glass falling and shattering on the floor.
Baking a birthday cake.
Burning a piece of paper.
Baking soda and vinegar mixing together.
What does this pic illustrate?
Element
Mixture of Compunds
Mixture of elemets
Compounds
If a rubber duck has a density of 0.84 g/mL, will it sink or float in water?
Sink
Float
Which of the following are characteristics of a metal?
malleable
ductile
brittle
good conductors
dull
Which of the following are characteristics of a non-metal?
poor conductors
ductile
brittle
good conductors
dull
Which of the following are characteristics of a metalloid?
malleable
solids, liquids, and gasses
brittle
semi-conductors
what is an example of a chemical change?
iron rusting
fireworks exploding
ice melting
fire burning
