Conservation of Matter
Authored by Ryan Decker
Science
9th Grade
NGSS covered
Used 4+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl2 + H2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What kind of reaction is this:
2C3H7OH +9O2 -> 6CO2 + 8H2O
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Students react baking soda & vinegar.
Which of the following would provide the evidence that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction?
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suppose a reaction were to happen in an open container in a lab. During the reaction, the scientist observes the chemicals bubble, and produce a gas. During the analysis the scientist notices that the reactants weighed 20 g when he started, and the product weighed 18 g. Explain what happened.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If there are 4 H atoms on the reactant side, how many H atoms will be on the product side?
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-1
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