PS1B - Chemical Reactions
Interactive Video
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Chemistry, Science, Biology, Physics
•
11th Grade - University
•
Medium
Wayground Content
Used 2+ times
FREE Resource
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7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of a chemical reaction?
Atoms are created and destroyed.
Atoms are rearranged and bonds are broken and re-formed.
Energy is always absorbed.
Molecules are only physically mixed.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which example illustrates the conservation of mass during a chemical reaction?
Melting ice into water.
Boiling water into steam.
Mixing hydrogen and oxygen to form water.
Dissolving sugar in water.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to collision theory, what can increase the rate of a chemical reaction?
Decreasing the temperature.
Increasing the concentration of reactants.
Reducing the number of reactants.
Decreasing the pressure.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to molecular motion when temperature is increased?
Molecular motion increases.
Molecular motion decreases.
Molecular motion remains constant.
Molecular motion stops.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a reversible change?
Rusting iron.
Burning wood.
Baking a cake.
Boiling water.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common experiment to demonstrate conservation of mass in elementary education?
Freezing water.
Melting chocolate.
Combining vinegar and baking soda.
Mixing oil and water.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In high school chemistry, what simulation can help students understand reaction rates?
A weather forecast.
phet.colorado.edu simulation.
A video game.
A cooking show.
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