Structure of the Atom ATOMS, BONDING AND MOLES Flashcards

1
Q

What are the three sub-atomic particles called?

A

Protons, neutrons and electrons

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2
Q

Where are the protons and neutrons found?

A

In the nucleus which is at the centre of the atom.

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3
Q

How are electrons arranged?

A

In shells around the nucleus.

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4
Q

How many electrons does each shell contain?

A

2,8,8,10

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5
Q

What charge and relative mass does a proton have?

A

Charge: +1

Relative mass: 1

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6
Q

What charge and relative mass does a neutron have?

A

Charge:0

Relative mass:1

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7
Q

What charge and relative mass does an electron have?

A

Charge:-1

Relative mass:1/2000

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8
Q

What does the group of the periodic table tell you?

A

How many electrons are in the outside shell.

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9
Q

What does the way an element reacts depend on?

A

The number of electrons in its highest energy level (outermost shell)

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10
Q

How many electrons does group 8 have?

A

It has 8 electrons in its outermost shell. This means that it has a full shell, therefore, they are stable and don’t react.

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11
Q

What do certain elements react in a similar way?

A

If they are in a particular group they have the same number of electrons in their highest energy level.

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12
Q

What does the atomic number tell you?

A

The number of protons in each atom of an element.

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13
Q

How are the events in the periodic table arranged?

A

In order of their atomic number.

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14
Q

What does the mass number tell you?

A

The number of protons plus neutrons in the nucleus of an atom.

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15
Q

How do you work out the number of neutrons in an atom?

A

Number of neutrons = mass number - atomic number.

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