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Chemistry - Atoms, Elements and Compounds > Atoms, Elements and Compounds > Flashcards

Atoms, Elements and Compounds Flashcards

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1
Q

What is an element?

A

A substance made of only one type of atom

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2
Q

What is a compound

A

Two or more different atoms chemically bonded together

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3
Q

What three particles are atoms made of?

A

Protons, neutrons and electrons

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4
Q

What is found in the nucleus of an atom?

A

Protons and neutrons

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5
Q

Where are electrons in an atom?

A

Orbiting the nucleus in shells

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6
Q

What is between the electrons and the nucleus?

A

Empty space

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7
Q

State the masses of the proton, neutron and electron.

A

Proton:1
Neutron: 1
Electron: negligible (very very small)

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8
Q

What is the atomic number of an atom?

A

The number of protons in an atom

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9
Q

What is the mass number of an atom?

A

The number of protons + the number of neutrons in an atom

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10
Q

How do you calculate the number of neutrons in an atom?

A

Mass number - atomic number

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11
Q

State the charges of the proton, neutron and electron

A

Proton: +1
Neutron: 0
Electron: -1

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12
Q

How many electrons go in each shell?

A

1st shell: 2
2nd shell: 8
3rd shell: 8

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13
Q

What are the groups on the periodic table?

A

Columns

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14
Q

What are the periods on the periodic table?

A

Rows

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15
Q

What does the group an element is in tell you about its electrons?

A

How many electrons are in the outer shell

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16
Q

What does the period an element is in tell you about its electrons?

A

How many shells it has

17
Q

A compound name ends in -ide. How many different elements are in this compound?

A

2

18
Q

A compound’s name ends in -ate. How many different elements are in this compound? Can you name any?

A

3 - one must be oxygen

19
Q

When writing chemical formulae, how would you show there are two atoms of an element?

A

Use a subscript 2 E.g. O2
(A subscript is a small number slightly lower than the letter)

20
Q

Where are the metals found on the periodic table?

A

Left hand side

21
Q

Where are the non-metals found on the periodic table?

A

Right hand side

22
Q

What are some properties of metals?

A

Conduct heat and electricity, strong, malleable

23
Q

What are some properties of non-metals?

A

Do not conduct heat and electricity, weak, brittle

Chemistry - Atoms, Elements and Compounds (1 decks)

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