Unit 3: Changes of Matter
Authored by Elizabeth Edenfield
Science
6th - 8th Grade
NGSS covered
Used 64+ times
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22 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
At higher temperatures
Tags
NGSS.MS-PS1-4
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Your teacher wants to demonstrate a chemical reaction. Which activity would BEST demonstrate a chemical reaction?
Placing a metal in an acid to create a gas
measuring the densities of liquid water and ice
melting a solid piece of aluminum
filling a balloon with helium gas.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
If reaction starts with 20g of reactants it should produce
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
A student heated a 10 gram sample of a chemical in an open container. A chemical reaction occurred, and the mass of the sample was measured again. The mass of the sample was found to be less than before the reaction. Which of the following best explains the decrease in mass of the sample?
The heat caused the chemical to become less dense.
The reaction gave off more heat than was added.
Some of the lighter particles were destroyed.
Some of the particles escaped as a gas formed.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
45 sec • 2 pts
True or False
The mass of the reactants in a chemical equation must equal the mass of the products.
True
False
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?
The wood disappears.
It stays the same chemically.
The atoms in the wood and oxygen rearrange and form smoke and ash.
Nothing.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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