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Natural Science 2017 > Topics 7,8,9 > Flashcards

Topics 7,8,9 Flashcards

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1
Q

Which fruits contain citric acid?

A

Oranges and lemons

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2
Q

What do acids taste like?

A

Sour

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3
Q

What do bass feel like?

A

Soapy and slippery

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4
Q

What givewhat gives coffee its bite taste and why?

A

Caffeine because it’s a base

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5
Q

What is the scientific name for vinegar?

A

Ethanoic acid

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6
Q

How do you make vinegar from wine?

A

You leave wine out in an open bottle for a few days and it will turn sour the oxygen from the air makes the wine acidic

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7
Q

What is the taste of sour milk caused by

A

Lactic acid

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8
Q

List a few natural acids

A 
Citric acid in fruits 
Ethanoic acid ,in vinegar
Lactic acid, sour milk
Carbonic acid, found in fizzy drinks.
Hydrochloric acid,in stomach juices
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9
Q

Give tw examples of strong acids

A

Hydrochloric acid

Sulfric acid

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10
Q

What do metals look lik

A

Thy are shiny

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11
Q

What do non-metals

A

Dull

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12
Q

What what is a metals state of matter?

A

Mostly solids except mercury, which is a liquid

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13
Q

What is a non metals state of matter

A

Gas,liquid and solid

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14
Q

What type of conductor is a metal

A

Good conductor

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15
Q

What type of conductor is a semi metal?

A

Poor conductor

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16
Q

What type of hat conductor is a metal

A

Good conductor

17
Q

What type of heat conductor is a non metal

A

Poor conductor

18
Q

What metals are magnetic

A

Iron, cobalt and nickel

19
Q

What non metals are magnetic

A

None are magnetic

20
Q

How malleable are metals

A

Can bend without breaking

21
Q

How malleable are non metals

A

Connor bend without breaking

22
Q

Are metals ductile ?

A

Yes can be stretched out into a thin wire

23
Q

Are non metals ductile

A

Cannot be stretched out

24
Q

What is the melting point of a metal

A

It’s a high melting point most metals are solid at room temperature

25
Q

What melting point does a non metal have

A

Low melting point

26
Q

What are semi metals

A

Semi metals are in the region between metals and non metals in the periodic table

27
Q

What is the most common semi metals

A

Silicon

28
Q

What is a group in the periodic table

A

The horizontal Colm

29
Q

What is a period in the periodic table

A

Th vertical column

30
Q

Are semi metals ductile and malleable

A

No

31
Q

Can semi metals conduct electricity?

A

Yes, but no as well as well as metals they are called semi metals

32
Q

What is a strong base

A

Magnesium oxide , used to treat indigestion

Bicorbonate of soda.

33
Q

What are the properties of bases

A

Taste bitter
Feel slippery on the skin
Many bases are corrosive and caustic

34
Q

What is a neutrals

A

They are neither acids o bases

35
Q

What is an example of a neutral

A

Slat solution sugar solution and cooking oil

Natural Science 2017 (10 decks)

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