Unit 6 Chemical Reactions

Unit 6 Chemical Reactions

10th Grade

26 Qs

quiz-placeholder

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Unit 6 Chemical Reactions

Unit 6 Chemical Reactions

Assessment

Quiz

others

10th Grade

Medium

Created by

Kylie Driskell

Used 2+ times

FREE Resource

26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

1) In a chemical reaction
the number of atoms in the reactants and products must be the same
the mass of the products is greater than the mass of reactants
the number of atoms in the reactants and products must change
energy as heat must be added to the reactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

2) In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
H
2H
H₂
OH

3.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

3) What is the whole number that appears in front of a formula in a chemical equation?
a subscript
a superscript
a ratio
a coefficient

4.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

4) Al(OH)₃ + Cu₂S-->
AlCu + S(OH)
Al₂S + OH
Al + Cu(OH)
Al₂S + Cu(OH)

5.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

5) N₂ + 3H₂ --> 2NH₃ Which of the following is the word equation for the above formula equation
nitrogen + hydrogen --> nitrogen hydride
nitrogen + hydrogen --> nitrogen trihydride
dinitrogen + dihydrogen --> nitrogen trihydride
none of these

6.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

7) According to the law of conservation of mass, the total mass of the reacting substance(s) is
always more than the total mass off the products
always less than the total mass of the products
sometimes more and sometimes less than the total mass of the products
always equal to the total mass of the product(s)

7.

MULTIPLE CHOICE QUESTION

30 sec • 4 pts

9) In the word equation, sodium oxide + water --> sodium hydroxide, the formula for sodium hydroxide is represented by
Na₂(OH)
Na(OH)
NaO₂
Na₂O

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