8F Periodic Table

8F Periodic Table

8th Grade

18 Qs

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8F Periodic Table

8F Periodic Table

Assessment

Quiz

Chemistry

8th Grade

Practice Problem

Medium

Created by

Stuart Dawson

Used 11+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements about Dalton's atomic theory is incorrect?

all matter is made up of tiny particles called atoms

the atoms of the same element are all different from each other

atoms cannot be created or destroyed

in a chemical reaction, atoms are rearranged to make new substances

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the following are physical properites

colour

melting point

conductivity fo heat

flammability

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a change that can be easily reversed?

melting ice

tearing up paper

burning paper

oxidation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What always happens in a chemical reaction?

new substances are formed

gas is given off

colour changes

energy is released or absorbed

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If 4 g of copper fully react with 1 g of oxyegn, how much copper oxide would be forned?

5 g

3 g

4 g

1 g

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many atoms are there in a molecule of methane (CH4)?

5

4

2

10

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is th ratio of lithium to oxygen in lithium oxide (Li2O)?

2:1

1:2

1:2

depends on how many atoms there are in total

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