AQA unit 1 Chemistry Flashcards

1
Q

What is an element

A

A substance made of one type of atom

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2
Q

What is a compound

A

A substance made of two or more types of atom chemically bonded together

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3
Q

What is a mixture

A

Two or more elements and compounds not chemically bonded together

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4
Q

Is oxygen an element compound or mixture

A

Its an element

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5
Q

Is carbon dioxide an element, compound or mixture

A

A compound

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6
Q

Is air an element, compound or a mixture

A

A mixture

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7
Q

How many carbon atoms are in CO2

A

One carbon atom

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8
Q

How many chlorine atoms are in A13Cl6

A

Six chlorine atoms

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9
Q

How many different elements are in C6H12O6

A

Three different elements(carbon,hydrogen,oxygen)

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10
Q

What is the centre of an atom called

A

The nucleus

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11
Q

Where are three subatomic particles in an atom

A

Protons, electrons and neutrons

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12
Q

Where are protons and neutrons located in the atom

A

In the nucleus

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13
Q

Where are electrons located

A

In the shells

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14
Q

What is the charge of a neutron

A

zero

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15
Q

What is the mass of a proton, electron and neutron

hint PEN 101

A

1,0,3

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16
Q

How many electrons can you fit in the first three

shells?

A

2, 8, 8

17
Q

Who came up with the plum pudding model

A

JJ Thompson

18
Q

Who said that the atom had a dense nucleus with electrons in orbit

A

Ernest Rutherford

19
Q

Who said that the electrons were in shells

A

Niels Bohr

20
Q

Who discovered the neutron

A

Chadwick

21
Q

What are the elements in group 1 called

A

Alkali metals

22
Q

What are the elements in group 7 called

A

Halogens

23
Q

What are the elements in group 0 called

A

Noble gases

24
Q

Why are the noble gases unreactive

A

They all have a full outer shell