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Which if these is an example of energy involved in a chemical change?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
What does liquid water need to change into water vapor?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
When lighting a match, why must it be drawn rapidly along a rough surface?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
What must often be added to increase the speed or ability of 2 substances to react?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
How does adding heat affect liquid water?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
Which of the following is an example of how understanding chemical change helps people?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
Which physical change does a swamp cooler use to cool the air?
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
Toni & Juan decide to do an experiment where one will drop food coloring into hot water; the other will do the same in cold water. Based on your knowledge of energy, predict the results
Adding heat
The invention of plastics allowed new ways of making things
Liquid to gas
Its molecules move faster
Burning a candle
Heat energy
To provide heat to start the reaction
The coloring will move through the hot water faster because hot water has more energy
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