Matter unit test

Question 1

The odour of a substance is a chemical property, True or false?

Answer 1

False

Question 2

The diagram suggest that the marshmallow on the left has a lower density than the marshmallow on the right.

Answer 2

True

Question 3

String peanuts in a popcorn produces a heterogeneous mixture

Answer 3

True

Question 4

If an element is a gas at room temperature it is likely to be a metal.

Answer 4

False

Question 5

According to Bohr’s theory, the maximum number of electrons in each of the first three orbits in atoms are respectively two, eight and ten

Answer 5

False

Question 6

The Bohr – Rutherford diagram shown represents a cation

Answer 6

False

Question 7

Behaviour in water (solubility] is an example of physical property

Answer 7

True

Question 8

A flame test can be used to identify an unknown metal.

Answer 8

True

Question 9

Electrolysis breaks down water into oxygen and hydrogen gas

Answer 9

True

Question 10

Goggles maybe taking off if a student has finished their experiment and is cleaning up

Answer 10

False

Question 11

A heavy weight is hung from two equal length of wire of the same diameter, but different composition. Wire A breaks immediately, but wire B stretches and thins significantly before breaking. this shows that

Answer 11

Wire B is more ductile

Question 12

Which observation is qualitative?

Answer 12

The material is very flexible

Question 13

Which would be the least viscous?

Answer 13

Water

Question 14

Passing electricity through liquid table salt produces sodium metal and chlorine gas. This experiment shows the table salt is

Answer 14

A compound

Question 15

Which element is likely to react violently with water?

Answer 15

Cesium

Question 16

Which statement is correct?

Answer 16

Nah is more reactive than Mg

Question 17

In the diagram shown of a planetary atom, the indicated particle is

Answer 17

An electron

Question 18

Of the following, which is a molecular element?

Answer 18

Nitrogen gas

Question 19

The Bohr – Rutherford diagram shown represents a

Answer 19

+1 ion

Question 20

Which molecular model is the best representation of NH three?

Answer 20

Model three

Question 21

You cannot see through a brick but you can see through a window

Answer 21

Optical clarity

Question 22

Copper and aluminum are easily drawn out into wires

Answer 22

Ductility

Question 23

A smooth polished metal surface is shiny and can be used as a mirror

Answer 23

Lustre

Question 24

Gold can be hammered into sheets as thin as tissue paper

Answer 24

Malleability

Question 25

A bulb will not produce light when connected to a battery with nylon fishing line

Answer 25

Electrical conductivity

Question 26

A bar of soap is easily scratched with a fingernail

Answer 26

Hardness

Question 27

Honey pours much more slowly than alcohol

Answer 27

Viscosity

Question 28

This element has two electrons in its outer orbit, and it belongs to the second period

Answer 28

Beryllium

Question 29

This element's most common isotope has a mass number of four and two neutrons per atom

Answer 29

Helium

Question 30

This element has eight electrons in its outer orbit, which is the second orbit.

Answer 30

Neon

Question 31

The outermost electrons of this element lion the fourth orbit, and it has chemical properties similar to magnesium.

Answer 31

Calcium

Question 32

This element has for electrons in its outer most orbit and it has the smallest atomic mass of the elements in its group

Answer 32

Carbon

Question 33

This elements outermost electrons line the second orbit, and it is the most reactive non-– metal in its period

Answer 33

Fluorine

Question 34

This element is the most reactive metal of the top four elements in its group, and it has chemical properties similar to lithium

Answer 34

Potassium

Question 35

Lithium

Answer 35

Li

Question 36

Sodium

Answer 36

Na

Question 37

Beryllium

Answer 37

Be

Question 38

Fluorine

Answer 38

F

Question 39

Neon

Answer 39

Me

Question 40

List any three of the five points of the particle theory of matter

Answer 40

One. Matter is made up of tiny particles that leave space in between them Two. The particles are always in constant random motion Three. The particles move faster as the temperature increases.

Question 41

What does WHMIS mean? Draw to safety symbols and explain how they show

Answer 41

Workplace hazardous materials information system