Matter unit test Flashcards

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1
Q

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

A

False

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2
Q

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

A

True

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3
Q

String peanuts in a popcorn produces a heterogeneous mixture

A

True

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4
Q

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

A

False

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5
Q

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

A

False

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6
Q

The Bohr – Rutherford diagram shown represents a cation

A

False

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7
Q

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

A

True

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8
Q

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

A

True

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9
Q

Electrolysis breaks down water into oxygen and hydrogen gas

A

True

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10
Q

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

A

False

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11
Q

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

A

Wire B is more ductile

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12
Q

Which observation is qualitative?

A

The material is very flexible

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13
Q

Which would be the least viscous?

A

Water

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14
Q

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

A

A compound

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15
Q

Which element is likely to react violently with water?

A

Cesium

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16
Q

Which statement is correct?

A

Nah is more reactive than Mg

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17
Q

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

A

An electron

18
Q

Of the following, which is a molecular element?

A

Nitrogen gas

19
Q

The Bohr – Rutherford diagram shown represents a

A

+1 ion

20
Q

Which molecular model is the best representation of NH three?

A

Model three

21
Q

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

A

Optical clarity

22
Q

Copper and aluminum are easily drawn out into wires

A

Ductility

23
Q

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

A

Lustre

24
Q

Gold can be hammered into sheets as thin as tissue paper

A

Malleability

25
Q

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

A

Electrical conductivity

26
Q

A bar of soap is easily scratched with a fingernail

A

Hardness

27
Q

Honey pours much more slowly than alcohol

A

Viscosity

28
Q

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

A

Beryllium

29
Q

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

A

Helium

30
Q

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

A

Neon

31
Q

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

A

Calcium

32
Q

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

A

Carbon

33
Q

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

A

Fluorine

34
Q

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

A

Potassium

35
Q

Lithium

A

Li

36
Q

Sodium

A

Na

37
Q

Beryllium

A

Be

38
Q

Fluorine

A

F

39
Q

Neon

A

Me

40
Q

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

A

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.

41
Q

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

A

Workplace hazardous materials information system