Balancing Chemistry

Balancing Chemistry

8th Grade

25 Qs

quiz-placeholder

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Balancing Chemistry

Balancing Chemistry

Assessment

Quiz

Science

8th Grade

Hard

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

Standards-aligned

Created by

Lisa Thompson

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

AgNO3 + Cu → Cu(NO3)2 + Ag

2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag

2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag

1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag

3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Balance this equation:  H2 + N2 → NH3

 H2 + 4N2 → NH3

 H2 + 3N2 → 2NH3

 3H2 + N2 → 2NH3

 2H2 + 2N2 → 2NH3

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Balance this reaction:

____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4

1,3,3,1

1,3,2,1

2,3,3,1

1,1,3,1

Tags

NGSS.MS-PS1-5

4.

DRAG AND DROP QUESTION

1 min • 1 pt

Media Image

The numbers placed in ​ (a)   of formulas to balance equations are called ​ (b)   , and they multiply all the atoms in a ​ (c)   . Thus, the symbol “2NaHCO₃” indicates ​ (d)   units of sodium bicarbonate, which contain 2 Na atoms, 2 H atoms, 2 C atoms, and 6 O atoms

(2 X 3= 6, the coefficient times the subscript for O).

front

coefficients

two

formula

5.

DRAG AND DROP QUESTION

1 min • 4 pts

Balance this equation:

​ (a)   FeCl2 + ​ (b)   Cl2 --> ​ (c)   FeCl3

2

1

3

4

Tags

NGSS.MS-PS1-5

6.

DROPDOWN QUESTION

1 min • 2 pts

When balancing an equation, you can change the ​ (a)   of a substance, but you cannot adjust any ​ (b)   because that would change the formula.

coefficient

subscript

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This unbalanced equation represents a chemical reaction:

Pb(NO3)2 + NaI → NaNO3 + PbI2

What is the coefficient for NaI once the equation is balanced?

1

2

3

4

Tags

NGSS.MS-PS1-5

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