Science Ch 17 Voc

Question 1

The smallest particle of an element that still retains the properties of the element

Answer 1

Atom

Question 2

Number of protons in an atom’s nucleus

Answer 2

Atomic number

Question 3

Weighted-average mass of the mixture of an element’s isotopes

Answer 3

Average atomic mass

Question 4

Particles surrounding the center of an atom that have a charge of 1-

Answer 4

Electrons

Question 5

Uses the symbol of an element and dots, representing the number of electrons in the element’s outer energy level

Answer 5

Electron dot diagram

Question 6

Vertical column in the periodic table

Answer 6

Group

Question 7

Atoms of the same element that have different numbers of neutrons

Answer 7

Isotopes

Question 8

Sum of the number of protons and neutrons in an atom’s nucleus

Answer 8

Mass number

Question 9

Neutral particle, composed of quarks, inside the nucleus of an atom

Answer 9

Neutron

Question 10

Positively charged center of an atom that contains protons and neutrons and is surrounded by a cloud of electrons

Answer 10

Nucleus

Question 11

Organized list of all known elements that are arranged by increasing atomic number and by changes in chemical and physical properties

Answer 11

Periodic table

Question 12

Horizontal row in the Periodic table

Answer 12

Period

Question 13

Particle, composed of quarks, inside the nucleus of an atom that has a charge of 1+

Answer 13

Proton

Question 14

Particles of matter that make up protons and neutrons

Answer 14

Quark