unit 1 lesson 1 part2 prep1

unit 1 lesson 1 part2 prep1

7th Grade

10 Qs

quiz-placeholder

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unit 1 lesson 1 part2 prep1

unit 1 lesson 1 part2 prep1

Assessment

Quiz

Science

7th Grade

Medium

Created by

Mrs.mona younes

Used 1+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an atom is changed into an ion the..................... is changed.

number of protons

number of neutrons

number of electrons

mass number

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A lithium atom ( Li ) changes into a lithium ion (Li+), which means that it .......

gains one proton.

gains one electron.

loses one proton.

loses one electron.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During the chemical reaction, a magnesium atom (12Mg) loses its outer electrons and changes into...............

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4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The only nonmetal that exists in a liquid state is............................

bromine

chlorine

hydrogen

nitrogen.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of nonmetals don’t conduct electricity, except.......................

bromine

aluminium

graphite

mercury

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a negative ion, the number of protons is ....................... the number of electrons.

less than

more than

equal to

no correct answer

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of these elements can form negative ions, except.........................

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