Law of Conservation of Mass (week 1)

Law of Conservation of Mass (week 1)

7th Grade

20 Qs

quiz-placeholder

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Law of Conservation of Mass (week 1)

Law of Conservation of Mass (week 1)

Assessment

Quiz

Science

7th Grade

Medium

NGSS
MS-PS1-5, MS-PS1-2, MS-PS1-1

+2

Standards-aligned

Created by

Gena Carter

Used 12+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a reaction starts with a total 54g of reactants it should produce 

a total of 40g of products

a total of 54g of products

a total of 180 g of products
None of the above

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-PS1-2

NGSS.MS-PS1-5

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.

62 
38
24
14

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many elements does PbNO7 have?

Hint: Every capital letter😉

2
3
4
5

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many nitrogen atoms does NH3 have?
1
2
3
4

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Substances present at the start of a chemical reaction are called ____.

subscripts
coefficients
reactants
products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Substances that form as the result, or at the end, of a chemical reaction are called ____.

products
reactants
coefficients
subscripts

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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