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Chemistry > C1- The atomic structure and the periodic table > Flashcards

C1- The atomic structure and the periodic table Flashcards

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1
Q

What do atoms contain?

A

Protons, neutrons and electrons.

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2
Q

What does the atomic number tell us?

A

How many protons the atom has.

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3
Q

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

A

atomic number - mass number.

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4
Q

What are isotopes?

A

Different forms of the same element, same amount of protons but a different amount of electrons.

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5
Q

What is a compound?

A

When elements react, atoms combine with other atoms to form compounds.

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6
Q

What is the differences between compounds?

A

Non metal compounds consist of molecules.
Compounds that contain a metal and non-metal consist of ions.

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7
Q

Give examples of the formulas for compounds.

A

CO2, NH3, H20

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8
Q

Name a difference between mixtures and compounds.

A

There’s no chemical bonds in a mixture.

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9
Q

How many electrons can the 1st, 2nd and 3rd shell contain.

A

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

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10
Q

What bonding is formed from a metal + metal?

A

Metallic bonding.

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11
Q

What bonding is formed from non-metal + metal?

A

Ionic bonding.

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12
Q

What bonding is formed from non-metal + non-metal?

A

Covalent bonding.

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13
Q

What gases are in group 0?

A

Noble gases.

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14
Q

What are the group 1 metals?

A

Alkali metals.

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15
Q

What do all group 1 metals give off when reacting?

A

Hydrogen.

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16
Q

What happens further down group 1?

A

Metals become more reactive.

17
Q

What do group 1 metals react with?

A

Oxygen and chlorine.

18
Q

Group 7 elements are called?

A

Halogens.

19
Q

What happens further down group 7?

A

They get less reactive, have higher boiling points and have higher reactive atomic masses.

20
Q

What ions do halogens form?

A

1- ions.

21
Q

Group 0 elements all have what properties?

A

Colourless, inert gases. They all also have 8 electrons.

22
Q

What happens further down group 0?

A

The boiling points increase and number of electrons increase.

23
Q

Neon is a gas at 25 degrees. What state is helium at this temperature?

A

Helium has a lower boiling point so it must also be a gas at 25 degrees.

Chemistry (1 decks)

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