GEN CHEM QUIZ 2

He is an Anglo-irish Philosopher who defined element as the simplest composition of matter.

• ROBERT MILLIKAN

• ROBERT BOYLE

• JOSEPH PRIESTLY

• ANTOINE-LAURENT LAVOISIER

I. Protons and electrons are the only particles that have a mass.

II. Protons and electrons have dissimilar charge.

• First statement is true. Second statement is false.

• First statement is false. Second statement is true.

• Both statement are true.

• Both statement are false.

The outer region of an atom contains all of the________?

• Neutrons

• Protons

• Electrons

• Nucleons

How many electrons are there in an atom if A is 197 and Z is 79?

• 276

• 118

• 197

• 79

One of the scientists in chemistry uses the "Dephlogisticated air" as an experiment. What element did he use in this experiment?

• Mercury Dioxide

• Oxygen

• Carbon Dioxide

• Mercury Oxide

The following are considered to be nonmetals, EXCEPT:

• C

• N

• K

• O

What is A if the number of electrons is 13 and the number of protons is 13?

• 0

• 26

• 13

• Cannot be determined

He proposed that the atom is a sphere of (+) particles to which are embedded to (-) particles.

• Joseph John Thomson

• Niels Bohr

• Ernest Rutherford

• John Dalton

It is considered as the fundamental building blocks of matter.

• Quark

• Atom

• Lepton

• All of the above

How many Potassium atoms are in the compound 6K₃P

answer choices?

• 18

• 6

• 3

• 1