Elements, Compounds And Mixtures Flashcards

0
Q

What is an alkali?

A

Chemical compound that neutralises acid. Typically corrosive.

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1
Q

What is an acid?

A

Chemical substance that is typically corrosive or sour tasting. Neutralises alkali

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2
Q

What does neutral mean?

A

In the middle of acid and and alkali, neither alkali or acid! Ph level of 7 its water!

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3
Q

What does neutralising mean?

A

Make an acid or alkali substance chemically neutral.

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4
Q

What is an indicator?

A

PH indicator measures how acidic, alkaline or neutral is is.

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5
Q

What does solution mean?

A

A mixture of a solute in a solvent.

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6
Q

What is a solute?

A

A substance that dissolves a solvent when a solution is made.

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7
Q

What is a solvent?

A

The liquid that dissolves a solute?

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8
Q

What does saturated mean?

A

A solution made when the maximum amount of a solute that can be dissolved.

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9
Q

What is an an element?

A

An element is only made up of one type of atom.

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10
Q

What is a compound?

A

An element is made up of 2 or more atoms chemically bonded together.

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11
Q

What is a mixture?

A

A mix of 2 or more compounds and atoms not chemically bonded together.

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12
Q

Ph levels of acid?

A

1-7

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13
Q

Ph Levels of alkali?

A

7-14

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14
Q

What is a valency?

A

Can be used to work out the chemical formula of a compound or element.

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15
Q

How many electrons can you fit in the first shell?

A

2

16
Q

How many electrons can you fit in the 2 etc shells?

A

8

17
Q

What is an ion?

A

A charged atom