The law of conservation of matter states that

atoms are neither created nor destroyed in chemical reactions.

chemical reactions change matter.

it is mandatory that you recycle.

a chemical equation can be balanced or unbalanced.

What is a coefficient?

The large number to the left of a formula.

The small number on the right of the chemical symbol.

What is the Law of Conservation of mass?

Chemical equations must have the same number and type of atoms before and after a reaction

Mass is created in a chemical reaction

Mass is created in a physical change

New chemicals formed from a chemical reaction have a larger overall mass than the original reactants

A chemical reaction is balanced when

Both sides have the same number and type of atoms

both sides have the same elements

How does the Law of Conservation of Mass apply to chemical reactions?

The reactants and products must have exactly the same number and type of atoms.

The reactants must have fewer atoms than the products.

The products must have twice as many atoms as the reactants.

The reactants and products must have close to the same number and type of atoms.

Based on the Law of Conservation of Matter, describe the relationship between the mass of the reactants and the mass of the products.

The mass of the reactants equals the mass of the products.

The mass of the products is always greater than the mass of the reactants.

The mass of the reactants is less than the mass of the products.

The mass of the reactants is greater than the mass of the products.

Unit 1 - Properties & Conservation of Mass

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Easy

•

NGSS

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

+4

Standards-aligned

Gary Hartle

Used 173+ times

FREE Resource

62 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many Hydrogen are in 4H₂O?

6

8

2

4

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many Oxygen are in H₂O?

1

2

0

4

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2H₂ + O₂ ----> 2H₂O What are the products?

------>

2H₂O

2H₂+ O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2H₂ + O₂--------> 2H₂O What are the reactants?

----->

2H₂O

2H₂ +O₂

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many Magnesium are in 10MgCl₂?

10

5

20

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many elements are in C₆H₁₂O₆?

1

2

3

4

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many atoms are there TOTAL in:
H₂SO₄

6

5

7

3

Tags

NGSS.MS-PS1-1

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Unit 1 - Properties & Conservation of Mass

62 questions

How many Hydrogen are in 4H₂O?

How many Oxygen are in H₂O?

2H₂ + O₂ ----> 2H₂O What are the products?

2H₂ + O₂--------> 2H₂O What are the reactants?

How many Magnesium are in 10MgCl₂?

How many elements are in C₆H₁₂O₆?

How many atoms are there TOTAL in:
H₂SO₄

Number of N in (NH₄)₂CrO₄

(Element or Compound)
C₂H₈O

How many O's are in Al₂(SO₄)₃

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Unit 1 - Properties & Conservation of Mass

62 questions

How many Hydrogen are in 4H2O?

How many Oxygen are in H2O?

2H2 + O2 ----> 2H2O What are the products?

2H2 + O2 --------> 2H2O What are the reactants?

How many Magnesium are in 10MgCl2?

How many elements are in C6H12O6?

How many atoms are there TOTAL in:H2SO4

Number of N in (NH₄)₂CrO₄

(Element or Compound) C2H8O

How many O's are in Al₂(SO₄)₃

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

How many Hydrogen are in 4H₂O?

How many Oxygen are in H₂O?

2H₂ + O₂ ----> 2H₂O What are the products?

2H₂ + O₂--------> 2H₂O What are the reactants?

How many Magnesium are in 10MgCl₂?

How many elements are in C₆H₁₂O₆?

How many atoms are there TOTAL in:
H₂SO₄

(Element or Compound)
C₂H₈O