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chemistry 11/9 > AQA Unit 1 chemistry > Flashcards

AQA Unit 1 chemistry Flashcards

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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 that are not chemically bonded together

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4
Q

Is oxygen an element, compound or mixture?

A

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 mixture?

A

a mixture

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7
Q

How many carbon atoms are in CO2?

A

one 1 carbon atom

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8
Q

How many chlorine atoms are in Al3Cl6

A

six 6 chlorine atom

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9
Q

How many different elements C6H12O6

A

three different elements (carbon,hydrogen and oxygen)

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10
Q

What is the centre of an atom called?

A

Nucleus

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11
Q

What are the three subatomic particles in an atom?

A

Protons, Neutrons and electrons

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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 in the atom?

A

in the outer 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

1,0,1

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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

J.J Thomson

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

James Chadwick

21
Q

What are the elements in group 1 called?

A

Alkail metals

22
Q

What are the element 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 (group 1)unreactive?

A

They all have a full outer shell

25
Q

What happens to the reactivity down group 1?

A

They get more reactive

chemistry 11/9 (1 decks)

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