How To Split an Atom Flashcards

1
Q

The ancient Greek who first spoke about the atom was?

A

Democritus

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2
Q

A chemical that is made up of only one type of atom is known as a ?

A

Element

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3
Q

groups of atoms join together to form a ?

A

molecule

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4
Q

How many element are found naturally in the universe?

A

92

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5
Q

Give the chemical symbol for the element Hydrogen

A

H

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6
Q

Give the chemical symbol for the elemnet Sodium

A

Na

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7
Q

Give the chemical symbol for the element gold?

A

Au

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8
Q

Give the chemical symbol for the element Silver

A

Ag

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9
Q

Give the chemical symbol for the element chlorine

A

Cl

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10
Q

Give the chemical symbol for the element potassium

A

K

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11
Q

Atom number 96 is named after a marie curie, name this atom

A

Curium

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12
Q

Atom number 98 was named after a state in the USA. Name this atom?

A

Californium

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13
Q

Atom number 99 was named after a famous scientist. name this atom

A

Einsteinium

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14
Q

Oxygen is normally a gas. But can it turn into a liquid if it gets very cold?

A

yes

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15
Q

the element chlorine is normally found in which physical state?

A

Gas

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16
Q

Chlorine is smelly. What is the colour of chlorine gas?

A

Green

17
Q

Name this king of ancient Greek and Roman mythology who was known for his foolishness and greed and who turned everything he touched to gold?

A

King Midas

18
Q

Metals are usually in their solid stae. Can you name a metal that is in a liquid state also known as a Runny Metal?

A

Mercury

19
Q

Is the element mercury poisonous?

A

Yes

20
Q

What is the chemical composition of water

A

Two atoms of hydrogen join to one atom of oxygen to give us water

21
Q

An atom is made up of protons, neutrons and electrons. The lightest among the three is?

A

electrons. They are 1800 times lighter than the neutrons and protons

22
Q

The elctrons zoom around the nucleus in invisible tracts known as?

A

orbits

23
Q

do different TYPES of atoms have different number of protons, neutrons and electrons?

A

yes

24
Q

What makes an atom heavier?

A

The more the number of protns and neutrons the heavier is the atom

25
Q
A
26
Q
A
27
Q

An atom is made of a central nucleus and orbiting electrons. This model of the atom was first described by a scientist named ?

A

Niels Bohr

28
Q

Name the force that holds the electrons in orbit?

A

Electromagnetic force

29
Q

the force that holds the electrons in orbit aka electromagnetic force. is this a weak force or a strong force?

A

weak force.

That is why electrons can jump and also escape from the nucleus

30
Q

when a lot of electrons are moving in one direction from one place to another this is known as?

A

Electricity

31
Q

he was a clumsy man who often broke his lab equipment

Whos discovered the electron ?

A

J J Thomson

32
Q

To split open the atom we need to break up which part of the atom

A

we need to break open the nucleus

33
Q

Name the man who discovered Uranium

A

Martin Klaproth

34
Q

When an atom breaks up and releases small particles and energy this phenomenon is known as ?

A

Radioactivity

35
Q

Who discovered radioactivity?

A

Henri Becquerel