WorksheetsChemistry Test 2023
Total questions: 30
Worksheet time: 8mins
Which letter in the diagram represents a compound?
A
B
C
D
3CO2 The COEFFICIENT in this formula
3
2
6
1
To balance this equation, SO2+O2→2SO3 you must:
Change the subscript to a 4
Place a 3 in front of the sulfur
Place a 3 in front of the oxygen
Place a 2 in front of the sulfur
Candle wax melting is a
chemical change
physical change
A chemical reaction in which temperature increases
Endothermic reaction
Chemical reaction
Physical reaction
Exothermic reaction
In the chemical equation 2NaF+Br2→2NaBr+F2 , the 2NaBr+F2 are the
products
reactants
Rust forming is
A physical change
A chemical change
Matter cannot be created or destroyed
Law of Energy
Law of Conservation of Mass
Matter
Homogeneous Mixture
Baking a cake is a
physical change
chemical change
Endothermic reaction
Energy is released
Temperature decreases
Temperature increases
Physical change
3CO2 The SUBSCRIPT in this formula
3
2
6
1
A substance with a density of 0.6 g/mL will float in water. True or False?
True
False
Magnetism is considered:
A sign of chemical change
A physical change
A chemical property
A physical property
