The Periodic Table
Atoms
Acids and bases
Chemical and Physical properties
E.M. Spectrum
100
This man noticed that a pattern of properties appeared when he arranged the elements in order of increasing atomic mass.
Who is Mendeleev?
100
This subatomic particle has a positive charge.
What is a proton?
100
This substance turns blue litmus paper red.
What is an acid?
100
A characteristic of a substance that describes its ability to change into different substances.
What is a chemical property?
100
This wave is used in Doppler radar.
What are microwaves?
200
These elements are found in columns and have similar characteristics.
What is a group?
200
This subatomic particle has a negative charge.
What is an electron?
200
This substance has a slippery feel and turns red litmus paper blue.
What is a base?
200
A characteristic of a substance that can be observed without changing it into another substance.
What is a physical property?
200
This wave is used to kill cancer cells.
?What are gamma rays (waves)
300
Elements arranged in rows.
What is a period?
300
This subatomic particle has no charge.
What is a neutron?
300
These two substances are the products of a neutralization reaction.
What are salt and water?
300
A chemical property of iron where it slowly combines with water and oxygen to combine this substance.
What is rust?
300
These waves are the only waves humans can see.
?What is visible light?
400
This group of elements do not react easily with other elements. Neon is an example.
What are the noble gases?
400
These two subatomic particles are found in the nucleus of an atom.
What are protons and neutrons?
400
This substance has a pH of 7 and is made up of two atoms of hydrogen and one atom of oxygen.
What is water?
400
A physical property of a substance that can be found by dividing mass by volume.
What is density?
400
This wave helps the skin to produce vitamin D.
What are ultraviolet waves?
500
This element has an atomic number of 1.
What is Hydrogen
500
This subatomic particle has a negative charge and is found in the orbitals(energy levels) outside the nucleus.
What is an electron?
500
These substances have a pH above 7.
What are bases?
500
A characteristic of a substance that can be observed without changing it into another substance.
What is a physical property?
500
These waves can be used to see teeth and bones.
What are x-ray?
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