Ms. Brichler's Review of Atomic Theory and the PeriodicTable

How has the atomic theory changed over the years?

• As new evidence was discovered, the atomic theory changed.
• As atomic models got better it proved that the atomic theory was accurate.
• Modifications were made every time a new element was discovered.
• Atomic theories changed as people's opinions changed. 

What would be a good definition of a metalloid?

• Elements that are shinier than most metals.
• Elements that have characteristics of both metals and non-metals. 
• Elements that are more reative than both metals and non-metals.
• Elements that conduct both heat and electricity.

If Mercury Hg) is a conductor of electricity, what other element would also be? 

• Nickel (Ni)
• Zinc (Zn)
• Gold (Au)
• Palladium (Pd)

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When describing the nature of scientific theories, one might say...

• Scientific theories can never change.
• Scientific theories can change with new evidence.
• They are easily discarded when proven wrong. 
• Scientific theories eventually become laws.

True or False?  Scientific theories can become Scientific laws.

• True
• False

What do elements in a group (column) have in common?

• They have the same number of protons.
• They share similar properties.
• They all conduct electricity.
• They are a continuous series of atomic numbers.

What two subatomic particles are found in the nucleus of an atom?

• Protons and Neutrons
• Protons and Electrons
• Neutrons and Electrons
• Electrons and Photons

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True or False?Protons have a positive charge.

• True
• False

True or False?Neutrons have a negative charge.

• True
• False

What happens when evidence is found that does not support an accepted theory?

• The theory is changed into a law. 
• The theory is discarded.
• The theory is modified with the new information.
• Nothing - the theory is still accepted.

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