Law of Conservation of Mass (week 1)
Authored by Gena Carter
Science
7th Grade
NGSS covered
Used 12+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If a reaction starts with a total 54g of reactants it should produce
a total of 54g of products
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
O + H2 → H2O
32 g of Oxygen completely reacts with 8 g of Hydrogen to produce _____ g of water.
8
12
24
40
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Mg + F → MgF
24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How many elements does PbNO7 have?
Hint: Every capital letter😉
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
How many nitrogen atoms does NH3 have?
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Substances present at the start of a chemical reaction are called ____.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Substances that form as the result, or at the end, of a chemical reaction are called ____.
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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