Science Quiz

What is the law of conservation of matter?

What is the difference between a fact and an opinion? Be able to identify each.

What system of measurement is used by scientists all over the world?

What are the three subatomic particles and their charges. Where is each located in the atom?

What causes uncertainty in measurement?

How many digits are certain in a measurement and how many are uncertain?

• none

• all of them

• all except one after the decimal point

isotopes have different numbers of protons

• True

• False

What is the difference between a positive ion and a negative ion?

• Positive ions gain electrons

• negative ions lose electrons

• positive lose electrons , negative gain

• none

What particles are in the nucleus of an atom?

• protons and electrons

• electrons and neutrons

• protons and neutrons

What is the difference between an anion and a cation?

• anion has no charge cation is negative

• cation positive charge anion negative

• cation neutral anion positive

• none