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Year 8 Science > 8F - The periodic Table > Flashcards

8F - The periodic Table Flashcards

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1
Q

Atoms in one element are…

A

the same.

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2
Q

Atoms of different elements are…

A

different types

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3
Q

What happens during chemical reations?

A

Elements and compounds combine.

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4
Q

What is caused by the energy released in the air by chemical reactions?

A

This makes rocket fly into the air, bangers explode and shells produce starburst of bright light.

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5
Q

What is an Atom?

A

The smallest unit of an element

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6
Q

What makes up all matter?

A

Atoms

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7
Q

What is a mollecule?

A

Two or more of the atoms of the same type of elements.

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8
Q

What is a n element?

A

It is made of the same type of atoms.

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9
Q

What is a compound?

A

Two or more different types of elements chemically bonded together.

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10
Q

What is a mixture?

A

Two or more different types of elements and or compound that are not chemically bonded together.

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11
Q

What is a noble gas?

A

Elements in group 8

Exist as single atoms

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12
Q

What do all partials in a particular element have in common?

A

They are all have the same type of atoms.

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13
Q

What is different about all atoms?

A

All atoms have different masses unless they have the same elements.

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14
Q

What is different between a compound and a mixture?

A

The particles in a mixture are not chemically bonded but in a compound they are.

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15
Q

What happens to atoms?

A

They cannot be destroyed or made?

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16
Q

What is important to remember when writing a chemical reations?

A

What goes in must come out.

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17
Q

What happens in a compounds?

A

The elements are broken apart so that they can chemically bond together to for new substances.

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18
Q

Electricity can pass through iron…

A

because it is a conductor of electricity.

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19
Q

Elements are substances…

A

that contain only one kind of atom.

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20
Q

Sulfur will turn from a liquid into a gas…

A

at its boiling point.

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21
Q

The symbols of iron and sulfur are…

A

are Fe and S.

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22
Q

Iron and sulfur are examples of…

A

of elements.

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23
Q

Iron is used to make bridges…

A

because it is strong.

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24
Q

Iron sulfide is a solid at room temperature…

A

as its melting point is high.

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25
Q

Iron sulfide is a compound…

A

because it contains different atoms joined together.

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26
Q

Compounds are different from the elements they are made from..

A

different types of atoms.

27
Q

All substances are made of…

A

tiny particles called atoms.

28
Q

What is a solid to a liquid?

A

It is melting.

29
Q

What is a liquid to a solid?

A

It is freezing.

30
Q

What is a liquid to a gas?

A

It is a boiling.

31
Q

What is a gas to a liquid?

A

It is condensing

32
Q

What is a physical change?

A

A change that is usually reversable and does not change the substance.

33
Q

What is an example of a physical change?

A

Evaporation

condensing

melting

sublimation

freezing

deposition

34
Q

What is a chemical reactions?

A

It is not reversable and changes the composition and type of substance at the molecular level.

35
Q

What is an example of a chemical reaction?

A

Methane + oxygen ——> carbon dioxide +water

36
Q

What is a property ?

A

characteristic or attribution of a substance.

37
Q

What is a physical property?

A

Something that we can see, feel or measure easily.

38
Q

Example of a physical change?

A

Colour change

shape

state of matter

malleability

melting/ boiling point

density

conductivity

39
Q

Examples of chemical changes?

A

reactivity

flammability

40
Q

What are signs or reactions?

A

gas being produced

smoke

bubbles

fizzing

sound/noises

colour change

fire

sparks

heat being produced

change in pH

41
Q

… contain atoms of different elements joined together.

A

Compounds…

42
Q

During chemical reactions atoms are rearranged, to make…

A

new substances.

43
Q

In chemical reactions…

A

… a new substances is formed.

44
Q

In physical reactions

A

… no new substances are formed.

45
Q

Change of state..

A

… are example of physical changes.

46
Q

Flammability is…

A

… a chemical property

47
Q

Melting and boiling points are…

A

… a physical property

48
Q

Conductivity of electricity is…

A

… a physical property

49
Q

The pH of a solution is…

A

… a chemical property

50
Q

What can elements be?

A

Metals

Non-metals

51
Q

How small are atoms?

A

Atoms are so tiny.

Atoms cannot be seen.

52
Q

What are two of the properties of sulfur?

A

It is a yellow solid.

It does not conduct electricity.

53
Q

What type of substance is Iron oxide?

A

It is a compound.

I contains iron and oxygen.

54
Q

What is a triad?

A

It is a group of three elements that have similar properties.

55
Q

What is an important thing about chemical properties?

A

The chemical properties of elements in the same groups are similar these elements from the same group are compounds.

56
Q

What is an important thing about chemical properties?

A

WhaThe chemical properties of elements in the same groups are similar these elements from the same group are compounds.

57
Q

What is a period?

A

It is a horizontal line across the periodic table.

58
Q

What is common about all the elements in the same group?

A

The all have similar chemical properties.

59
Q

What to remember about physical properties?

A

All metals have similar physical properties.

Metals and non-metals have different properties.

60
Q

What is a trend?

A

A pattern or a tendency that increase/ decrease/ stay the same in the series of data.

61
Q

How to write what the trend between two substances is?

A

The _____________________ from _______________ (____) to _______________ (____) ( increases/ decrease)

The The _____________________ from _______________ (____) to _______________ (____) ( increases/ decrease)

62
Q

What happens when metals react with oxygen?

A

They form metal oxides.

63
Q

What is common with chemical properties of element in the same group?

A

Elements in the same group of the periodic table have similar chemical properties (react in the same way) and form similar compounds.

64
Q

What is reactivity?

A

How reactive something is.

The property of participating in chemical reaction.

The more reactive the more violent and quick the reaction is

Year 8 Science (7 decks)

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