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Abi Science 2016 > Compounds > Flashcards

Compounds Flashcards

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1
Q

How do you represent a compound?

A

Using a chemical formula

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2
Q

What does the formula of a compound tell you?

A

Which elements are in a compound

The ratio of each element present

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3
Q

What is a chemical formula made up of?

A

Symbols of the elements in contains

A sub-script number telling you how many atoms of each element are in the compound

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4
Q

When naming a compound consisting of two elements, what suffix will you use?

A

-ide

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5
Q

When naming a compound, which element will come first?

A

Compound names go from left to right on the periodic table

Metal names will come first

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6
Q

When naming a compound that has two non-metal elements bonded together what should you do?

A

The left hand element will keep its name
The second element will end in ide
If the molecule has more than one atom of an element, indicate with a prefix

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7
Q

What is the prefix for 1?

A

mono

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8
Q

What is the prefix for 2?

A

di

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9
Q

What is the prefix for 3?

A

tri

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10
Q

What is the prefix for 4?

A

tetra

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11
Q

What is the prefix for 5?

A

penta

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12
Q

What is the prefix for 6?

A

hexa

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13
Q

What is the prefix for 7?

A

hepta

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14
Q

What is the prefix for 8?

A

octa

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15
Q

What must you do when you have a compound consisting of three elements?

A

Instead of ide, use ate

Do not use prefixes

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16
Q

What are metals like?

A

They are normally shiny, can be punted into a shape, drawn into threads and are good conductors of electricity and heat

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17
Q

What are non-metals like?

A

They are dull, brittle and are bad conductors of heat and electricity.

18
Q

What are semi-metals like?

A

They share properties of both metals and non-metals

19
Q

Where are the metals on the periodic table?

A

They are in the middle of the bold line

20
Q

Where are the semi-metals on the periodic table?

A

They are on both sides of the bold zig-zag line.

21
Q

What are periods?

A

They are the horizontal rows on the periodic table.

22
Q

What are groups?

A

They are the vertical columns on a periodic table

23
Q

What is the name for group one?

A

Alkali metals

24
Q

What is the name for group two?

A

Alkali earth metals

25
Q

What is the name for group seventeen?

A

Halogens

26
Q

What is the name for group 18?

A

Noble gases

27
Q

What is the area between the bold line called?

A

Transition metals

28
Q

What are alkali metals?

A

They are extremely reactive
Most of them will react with water and explode on contact
They are one of the most unstable group on the periodic table

29
Q

What are the halogens?

A

They are diatomic

30
Q

What is diatomic?

A

Diatomic is when a single atom of that element will never be found on its own, it will always come in pairs. Hydrogen, Oxygen and Nitrogen are also diatomic

31
Q

What are the noble gases?

A

They are the opposite of diatomic elements
They will not bond with anything
They are the most stable elements

32
Q

What are transition metals?

A

They are elements that can have 1-4 electrons in their outermost layer.

33
Q

How many electrons does Group 13 have in its outermost layer?

A

3

34
Q

How many electrons does Group 14 have in its outermost layer?

A

4

35
Q

How many electrons does Group 15 have in its outermost layer?

A

5

36
Q

How many electrons does Group 16 have in its outermost layer?

A

6

37
Q

How many electrons does Group 17 have in its outermost layer?

A

7

38
Q

How many electrons does Group 18 have in its outermost layer?

A

8

39
Q

Who created the periodic table?

A

Dmitri Mendeleev

40
Q

What is the most malleable of metals?

A

Gold

41
Q

What is the definition of a compound?

A

A compound is a molecule that is made up of two or more elements that is chemically bonded together in a fixed ratio.

Abi Science 2016 (16 decks)

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