NMAT MASTERCLASS - EXAM 4

NMAT MASTERCLASS - EXAM 4

Professional Development

15 Qs

quiz-placeholder

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NMAT MASTERCLASS - EXAM 4

NMAT MASTERCLASS - EXAM 4

Assessment

Quiz

Chemistry

Professional Development

Medium

Created by

JAY ROBERT LACEDA

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

The word equation “magnesium reacts with chlorine to produce magnesium chloride” would be represented by which of the following formula equations?

Mg --> Cl2 + MgCl2

MgCl2---> Mg + Cl2

MgCl2 + Mg ---> Cl2

Mg + Cl2 ---> MgCl2

2.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

In balancing a chemical equation, which of the following are you allowed to do?

change subscripts

change superscripts

write coefficients

add new substances

3.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Which of the following symbols means a substance is in water solution?

(s)

(l)

(aq)

(g)

4.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

What is the general form for a single-replacement reaction?

A + B ---> AB

AB -----> A + B

A + BX ---> AX + B

AX + BY --> AY + BX

5.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

According to the law of conservation of mass, the total mass of the reacting substances is _________

Always more than the total mass of products

Always less than the total mass of products

Always equal to the total mass of the products

sometimes more and sometimes less than total mass of products

6.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

The reaction 2 KClO3 (s) -------> 2 KCl(s) + 3O2(g) is an example of what type of reaction?

Synthesis reaction

Decomposition reaction

Double replacement reaction

Combustion reaction

7.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

What is the expected product if sodium metal reacts with oxygen gas?

NaO

Na2O

NaO2

Na2O2

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