Atoms
Elements
Chemical vs Physical
General Chemistry
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
The three states of matter are
Solid Liquid Gas
200
Which of the following are found in the nucleus? Protons Electrons Neutrons
Protons Electrons
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

Give one example of chemistry in our every day lives

Any suitable answer

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

Describe some of the indicators that a chemical change has occured.

smell heat or light colour change

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 number of protons also equals the number of
electrons
500

When an atom receives electrons what does charge does the atom than take on ?

a negative charge

500

What is a Dot-Cross Diagram?

Is the diagram that shows only the outer shell electrons

500
cooking an egg, chemical of physical change ?
Chemical change because a new substance has been made
500
Pb and Ag are the symbols for what elements
Gold and Lead
M
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