CHE 102 (Chapter 4)

According to Dalton's Atomic Theory, all matter is made up of what?

• Particles

• Elements

• Matter

• Atoms

According to Dalton's Atomic Theory, a/an (a)   is identified by an atom's mass, size, and similar properties.

According to Dalton's Atomic Theory, an atom cannot be what?

• Created

• Subdivided

• Ionized

• Destroyed

According to Dalton's Atomic Theory, atoms of different elements combine in simple whole number ratios to form chemical compounds.

• True

• False

According to Dalton's Atomic Theory, what happens to atoms in a chemical reaction?

• Created

• Combined

• Destroyed

• Separated

• Rearranged

Which unit is used with an element's mass?

• g

• kg

• amu

• mL

What describes a proton?

• p⁺, 1 amu, relative charge of +1, located in nucleus

• p⁺, 2 amu, relative charge of +1, located in nucleus

• p⁺, 1 amu, relative charge of +2, located in nucleus

• p⁺, 1 amu, relative charge of +1, located outside of the nucleus

What describes an electron?

• n⁰, 5.45 x 10^-4 amu, relative charge of -1, located outside of the nucleus

• e^-, 5.45 x 10^-4 amu, relative charge of -3, located outside of the nucleus

• e^-, 5.45 x 10^-4 amu, relative charge of -1, located outside of the nucleus

• e^-, 5.45 x 10^-4 amu, relative charge of -1, located inside of the nucleus

What describes a neutron?

• n⁰, 0 amu, relative charge of 0, located inside of the nucleus

• n⁰, 1 amu, relative charge of 0, located inside of the nucleus

• n⁰, 1 amu, relative charge of +3, located inside of the nucleus

• n⁰, 1 amu, relative charge of 0, located outside of the nucleus

What did the gold foil experiment prove?

• The existence of neutrons in the nucleus

• The existence of electrons

• The existence of the nucleus

• The existence of positively charged particles in the nucleus