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Atoms
Elements
Chemical vs Physical
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Suprise
100
What is all found in an atom
protons electrons and neutrons
100
What are the first two elements of the periodic table?
Hydrogen and Helium.
100
If the object changes colour is it a chemical or a physical change?
chemical change
100
Draw the Bohr Ruthford Diagram for H
1 electron
100
The three states of matter are
Solid Liquid Gas
200

Which of the following are found in the nucleus? Protons Electrons Neutrons

Protons & Neutrons

200
True or False: Neon has a full valence shell.
True.
200
Water freezing is a chemical or physical change?
a physical change becuase no new substance was made
200
In a Bohr Rutherford Diagram explain the number of electrons that each shell can hold.
the first one 2, and the rest 8
200
Give one example of chemistry in our every day lives
...
300
The atomic mass number represents the number of.....
protons and neutrons
300
The periodic table is seperated into two groups.
Metals and Non Metals
300
Discribe some of the indicators that a chemical change has occured.
smell heat or light colour change
300
Elements with only one valence electron are located in what group in the periodic table.
Alkali Metals
300
Give the chemical formula for water
H2O
400
Name all the charges of the following and explain where they are found. Protons Electrons Neutrons
Protons (+) electrons (-) neutrons. (n)
400
What are the following elements names. Na K C Cl
sodium potassium calcium chlorine
400
Crushing a can is a chemical of physical change
physical
400
The group with a full valence shell is called what?
Noble Gases.
400
the number of protons also equals the number of
electrons
500
When an atom recieves electrons what does charge does the atom than take on ?
a negative charge
500

What is a Lewis Dot Diagram?

Is the diagram that shows only the valence electrons

500
cooking an egg, chemical of physical change ?
Chemical change because a new substance has been made
500
If an atom gives away its electrons to become stable it has a _____ charge
postive
500
Pb and Ag are the symbols for what elements
Gold and Lead