Energy Changes in Chemical Reactions
Authored by Sherri Grosso
Science
9th - 11th Grade
NGSS covered
Used 178+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Scientists are looking into the decomposition of water (H2O --> H2 + H2O) to make hydrogen fuel with the help of the Sun’s energy. What challenge do scientists face with this task?
Decomposing water requires a high activation energy.
The Sun isn't a renewable resource.
Decomposing water results in toxic byproducts.
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which chemical reaction shows photosynthesis?
carbon + oxygen → carbon dioxide
water + carbon dioxide + sunlight → oxygen + glucose
hydrogen + oxygen → water
Tags
NGSS.HS-LS1-5
NGSS.HS-LS2-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these reactions is a combustion reaction?
production of food by plants with the help of the Sun's energy
rotting of fruits and vegetables
burning wood
Tags
NGSS.MS-PS1-5
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells?
There are two choices that are correct.
Burning fossil fuels contributes to climate change.
Burning fossil fuels takes place inside expensive fuel cells.
Fossil fuels are nonrenewable.
Tags
NGSS.HS-ESS3-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for this chemical reaction?
Energy is absorbed in the reaction.
Energy is released in the reaction.
There is no transfer of energy in the reaction.
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A hydrogen fuel cell is more efficient than a combustion reaction because very little of the released energy is released as _________.
heat
electrical energy
chemical energy
Tags
NGSS.HS-PS3-4
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When used at home, a fuel cell eliminates the need for ____________ because the cell is portable.
oxygen
hydrogen
an electrical grid
Tags
NGSS.HS-PS3-3
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