How To Split an Atom Flashcards
The ancient Greek who first spoke about the atom was?
Democritus
A chemical that is made up of only one type of atom is known as a ?
Element
groups of atoms join together to form a ?
molecule
How many element are found naturally in the universe?
92
Give the chemical symbol for the element Hydrogen
H
Give the chemical symbol for the elemnet Sodium
Na
Give the chemical symbol for the element gold?
Au
Give the chemical symbol for the element Silver
Ag
Give the chemical symbol for the element chlorine
Cl
Give the chemical symbol for the element potassium
K
Atom number 96 is named after a marie curie, name this atom
Curium
Atom number 98 was named after a state in the USA. Name this atom?
Californium
Atom number 99 was named after a famous scientist. name this atom
Einsteinium
Oxygen is normally a gas. But can it turn into a liquid if it gets very cold?
yes
the element chlorine is normally found in which physical state?
Gas
Chlorine is smelly. What is the colour of chlorine gas?
Green
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?
King Midas
Metals are usually in their solid stae. Can you name a metal that is in a liquid state also known as a Runny Metal?
Mercury
Is the element mercury poisonous?
Yes
What is the chemical composition of water
Two atoms of hydrogen join to one atom of oxygen to give us water
An atom is made up of protons, neutrons and electrons. The lightest among the three is?
electrons. They are 1800 times lighter than the neutrons and protons
The elctrons zoom around the nucleus in invisible tracts known as?
orbits
do different TYPES of atoms have different number of protons, neutrons and electrons?
yes
What makes an atom heavier?
The more the number of protns and neutrons the heavier is the atom
An atom is made of a central nucleus and orbiting electrons. This model of the atom was first described by a scientist named ?
Niels Bohr
Name the force that holds the electrons in orbit?
Electromagnetic force
the force that holds the electrons in orbit aka electromagnetic force. is this a weak force or a strong force?
weak force.
That is why electrons can jump and also escape from the nucleus
when a lot of electrons are moving in one direction from one place to another this is known as?
Electricity
he was a clumsy man who often broke his lab equipment
Whos discovered the electron ?
J J Thomson
To split open the atom we need to break up which part of the atom
we need to break open the nucleus
Name the man who discovered Uranium
Martin Klaproth
When an atom breaks up and releases small particles and energy this phenomenon is known as ?
Radioactivity
Who discovered radioactivity?
Henri Becquerel
