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WorksheetsIndicators of a Chemical Reaction
Total questions: 10
Worksheet time: 6mins
Which is not an indicator of a chemical reaction?
Formation of a gas
Color Change
A phase change
Production of light or heat
Shape change is an indicator of a chemical reaction
True
False
Bubbles forming in a chemical reaction represent...
Formation of a gas
Production of an odor
A phase change
The formation of a precipitate
Which chemical reactions are correctly matched with their indicators? (Choose 2)
Rust - Color change
Rotting potato - Production of an odor
Rotting leaves - Formation of a gas
Baking a cake - Production of sound
While color is a(n) ______, color change is a(n)________
Physical property, chemical property
Indicator of a reaction, physical property
Chemical property, indicator of a chemical reaction
Physical property, indicator of a chemical reaction
Energy release is an indicator of a chemical reaction
True
False
Energy release can be in the form of ______, _____, or ______
Heat, light, sound
Heat, odor, light
Light, movement, sound
Sound, movement, odor
A chemical reaction results in...
A new, different substance
Bubbling
The creation of matter
Nothing, the chemical is unchanged
Are the bubbles formed in a pot of boiling water a sign of a chemical reaction?
No
Yes
Which are examples of chemical reactions? (Choose all that are correct)
Oxidation of a penny
Burning wood
Pouring water on sand
Bleaching your hair
