7.3 A Closer Look At Atoms Flashcards

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1
Q

What do atoms make up?

A

They make up everything

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2
Q

What are some physical and chemical properties of atoms?

A

Physical: size and mass
Chemical: determines atoms interacts with others

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3
Q

What are atoms made up of?

A

Subatomic particles

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4
Q

What are the three types of subatomic particles?

A

Protons, neutrons and electrons

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5
Q

Where are protons and neutrons?

A

In the centre of the nucleus

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6
Q

How much lighter are electrons from protons and neutrons?

A

1800x lighter

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7
Q

Why are electrons bound tightly to the nucleus?

A

Because electrons have a - charge and protons have a + charge. Opposite attract like a magnet

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8
Q

What is the total charge of an atom?

A

0 because there is an equal number of electrons and protons, and neutrons are neutral

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9
Q

What do the number of protons determine?

A

What type of atom it is and what element they belong to

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10
Q

What jus the atomic number?

A

The number of protons in an atom. In the periodic table, elements ordered by the atomic number

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11
Q

What is the mass number?

A

The number or protons and electrons. Often written alongside the chemical symbol

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12
Q

How many electrons can be held in each shell?

A

Inner shell= 2 electrons
Second shell= 8 electrons
Third shell= 18 electrons
Fourth shell = max of 32 electrons

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13
Q

What takes up the most space of an atom?

A

The electron shells

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