Atoms and the Periodic Table Flashcards

1
Q

What are all substances made of?

A

Atoms

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2
Q

What is an element?

A

A substance made from only 1 sort of atom

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3
Q

Where are elements shown?

A

In the periodic table

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4
Q

What does each group in the periodic table contain?

A

Elements with similar properties

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5
Q

What are atoms of each element represented by?

A

Symbols

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6
Q

What is the nucleus made up of?

A

Protons and neutrons

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7
Q

What’s the relative charge of a neutron?

A

0

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8
Q

What’s the relative charge of a proton?

A

+1

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9
Q

What’s the relative charge of an electron?

A

-1

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10
Q

In an atom, what is the number of electrons equal to?

A

The number of protons in the nucleus

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11
Q

What overall charge do atoms have?

A

No overall electrical charge

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12
Q

What do all atoms of a particular element have the same number of?

A

Protons

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13
Q

What’s the atomic number?

A

Number of protons in an element

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14
Q

What’s the mass number?

A

Sum of protons and neutrons

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15
Q

What do elements in the same group of the periodic table have in common, in terms of electrons?

A

Same number of electrons in their outer shell- giving them similar properties

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16
Q

What are elements in Group 0 known as?

A

Noble gases

17
Q

Why are Noble Gases unreactive?

A

As their atoms have stable arrangements of of electrons