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Science > Structure Of The Atom > Flashcards

Structure Of The Atom Flashcards

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1
Q

Describe what are electrons?

A

Negatively charged and are found circling the nucleus

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2
Q

Describe neutrons

A

Positively charged and are found in the nucleus

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3
Q

What is a chemical element?

A

Consists of only one type of atom

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4
Q

What other name can be used for atomic number?

A

Proton number

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5
Q

How can we work out the mass number of an element?

A

Mass = protons + neutrons

NOTE: neutrons is also equal to the number of nucleons

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6
Q

Name the first 4 alkali metals

A

Lithium
Sodium
Potassium
Rubidium

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7
Q

Name the first 3 alkali earth metals

A

Beryllium
Magnesium
Calcium

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8
Q

Name the first 2 halogens

A

Fluorine

Chlorine

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9
Q

Name the first 3 noble gases

A

Helium
Neon
Argon

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10
Q

Which group is the most reactive?

A

Group 1, 7

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11
Q

Name the first 5 transition metals

A 
Scandium
Titanium
Vanadium
Chromium 
Manganese
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12
Q

Explain what electrolysis of water is

A

The decomposition of water into oxygen and hydrogen gas. Electric currents are passed through the water causing it to decompose.

Basically…the use of electricity to separate a compound into its elements

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13
Q

How is a compound formed?

A

When 2 or more elements are chemically combined

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14
Q

What gases does water consist of?

A

Hydrogen

Oxygen

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15
Q

What mechanism can be used for electrolysis of water?

A

A Hoffman - Voltameter

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16
Q

What name can be given for ‘2 of the same atoms’

A

Diatomic

17
Q

Name a few diatomic molecules?

A

Hydrogen gas
Oxygen gas
Chlorine gas
Nitrogen gas

18
Q

Name the elements in nitrogen dioxide

A

Nitrogen

Oxygen

19
Q

What is the difference between nitrogen oxide and nitrogen dioxide?

A

Nitrogen oxide contains only 1 oxygen atom

Nitrogen dioxide contains 2 oxygen atoms (diatomic)

20
Q

Why would the volume of hydrogen collected be more than the volume of oxygen?

A

There are 2 hydrogen atoms in a water molecule therefore the hydrogen volume is larger

21
Q

Describe protons?

A

Positively charged, found in the nucleus

Science (5 decks)

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