Chem Vocab Quiz on Aug 29, 2016

Question 1

Electron

Answer 1

Negatively charged. Located in the electron cloud which takes up virtually the entire volume of the atom

Question 2

Proton

Answer 2

Positively charged. Located in the nucleus. The number of protons identifies the element. If the number of protons changes, the element changes.

Question 3

Neutron

Answer 3

Neutral charge. Located in the nucleus.

Question 4

Ion

Answer 4

An atom that has a charge because it either lost or gained an atom.

Question 5

Cation

Answer 5

An atom that is positively charged because it has more protons than electrons.

Question 6

Anion

Answer 6

An atom that is negatively charged because it has more electrons than protons.

Question 7

Atom

Answer 7

The smallest unit of any element. They consist of protons, neutrons, and electrons. (fill definition).

Question 8

Nucleus

Answer 8

The center of the atom. It is positively charged. It makes up 98.9% of the atom’s mass. It is composed of protons and neutrons.

Question 9

Isotope

Answer 9

Alternate forms of an element. They have the same number of protons BUT a different number of neutrons.

Question 10

Atomic Number

Answer 10

The number of protons an atom or ion has

Question 11

Mass Number

Answer 11

The sum of the protons and neutrons an atom has (whole number, rounded mass)

Question 12

Polyatomic Ion

Answer 12

An ion made of different elements bound together. They can be positive or negative. (e.g., NH4^+, NO2^-1, PO4^-3.

Question 13

Quark

Answer 13

All of the other particles located in the nucleus of an atom. Some types of quarks combine to form a proton. Other types combine to form a neutron.