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Bomboclat ๐Ÿ”ฅ > Science Revision (chemistry) > Flashcards

Science Revision (chemistry) Flashcards

1
Q

Atoms have a radius of ________.

A

0.1 nanometres

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2
Q

Atoms are the ________________ of chemistry.

A

Fundamental building blocks

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3
Q

What is everything made of?

A

Atoms

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4
Q

The three sub-atomic particles of atoms are called ________________.

A

Protons, neutrons and electrons

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5
Q

Electrons have a ___________ charge.

A

Negative

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6
Q

Neutrons have a __________ charge.

A

Neutral

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7
Q

Protons have a ____________ charge.

A

Positive

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8
Q

Elements are made of ________________.

A

One type of atom only

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9
Q

There are _______ elements on the periodic table.

A

118

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10
Q

What are isotopes?

A

Isotopes have the same atomic number and different mass number. They are different forms of the same element.

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11
Q

What is the formula for AแนŸ?

A

(First numberpercentage) + (second numberpercantage)/percentage+percentage

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12
Q

What is the difference between an element and a compound?

A

An element is just made of one type of atom whereas a compound is two or more elements are chemically combined

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13
Q

What is the formula to find the amount of neutrons in an element atom?

A

Atomic mass - atomic number

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14
Q

What does the atomic number tell us?

A

The amount of protons (and electrons) are in an atom

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15
Q

How do we calculate the mass number?

A

Protons + plus neutrons

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16
Q

What is the electron configuration?

A

2,8,8,32

17
Q

What are ions?

A

Ions are charged atoms, either positive or negative, that are formed when an atom loses or gains electrons.

18
Q

What is valence?

A

Outer

19
Q

What is a valence shell?

A

Outer shell

20
Q

What is a valence electron?

A

Outer electron

21
Q

What are positive ions?

A

Atoms that lose electrons so there are more protons making it positive

22
Q

What are positive ions called?

A

Cations

23
Q

Where are most cations located?

A

In group 1, 2, and 3

24
Q

Cations are mostly ________.

A

Metals

25
Q

Is it easier for cations to lose or gain electrons?

A

Lose electrons

26
Q

What are negative ions?

A

Negative ions are atoms that gain electrons making the atom have a negative charge since there are less protons

27
Q

What are negatively charged ions called?

A

Anions

28
Q

Where are most anions located?

A

In group 5, 6, and 7

29
Q

Anions are mostly _______.

A

Non metals

30
Q

Is it easier for ions to lose or gain electrons?

A

Gain electrons

31
Q

What are the three types of radiation?

A

Alpha, beta and gamma

32
Q

Which type of radiation is the weakest?

A

Alpha

33
Q

Which type of radiation is strongest?

A

Gamma

34
Q
A

Bomboclat ๐Ÿ”ฅ (1 decks)

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