WorksheetsChemical Reactions Review
Total questions: 15
Worksheet time: 15mins
Two clear liquids are mixed together and turns pink
Physical property
Chemical property
In an endothermic reaction, heat is ...
taken in
given out
In an exothermic reaction, heat is ...
taken in
given out
Baking bread and cooking an egg are examples of....?
Endothermic processes
Exothermic processess
None of these
What type of reaction occurs in a hand warmer?
exothermic
endothermic
Matter is not created or destroyed during a chemical reaction.
True
False
Flammability
Physical
Chemical
Physical or Chemical Property: Reactivity
physical
chemical
Physical or Chemical Property: Ability to Rust
Physical
chemical
Physical or Chemical Change: Rotting apple
physical
chemical
C + O2 --> CO2
Symbol
Formula
Equation
Which of the following is a sign of a chemical reaction?
Change in color
Melting of ice
Boiling of water
Breaking a glass
In a chemical reaction, the substances that undergo change are called:
Products
Reactants
Catalysts
Inhibitors
What is the role of a catalyst in a chemical reaction?
It increases the temperature
It decreases the temperature
It speeds up the reaction
It slows down the reaction
Which of the following represents a balanced chemical equation?
@@ ext{H}_2 + ext{O}_2 ightarrow ext{H}_2 ext{O}@@
@@ ext{C} + ext{O}_2 ightarrow ext{CO}_2@@
@@ ext{N}_2 + 3 ext{H}_2 ightarrow 2 ext{NH}_3@@
@@ ext{Na} + ext{Cl}_2 ightarrow ext{NaCl}@@
