22-23 Chemistry STAAR Review (Questions Only)

The positively charged particle in the center of an atom is called the ___.

• proton

• electron

• neutron

• quark

The electron has a ________ charge and is located in the __________..

• negative, electron cloud

• neutral, nucleus

• positive, nucleus

• positive, electron cloud

Which statement correctly describes the relative masses of subatomic particles?

• Protons and neutrons have almost equal masses, and electrons have no mass.

• Neutrons and electrons have almost equal masses, and protons have a much larger mass.

• Protons, neutrons, and electrons all have roughly the same masses.

Which electrical charge does a neutron have?

• neutral

• positive

• negative

Which two particles are in the atomic nucleus?

• protons and neutrons

• neutrons and electrons

• neutrons and ions

• electrons and protons

The atomic number of an element that has 6 protons and 8 neutrons is ___.

• 6

• 2

• 8

• 14

What distinguishes each element from all others, and gives its identity?

• The number of protons

• The number of neutrons

• The electron configuration

• The element's universal origin

Fluorine is atomic number 9, and has a mass of 19. How many electrons would it have?

• 9

• 6

• 19

• 10

Tags

NGSS.MS-PS1-1

Fluorine is atomic number 9, and has a mass of 19. How many neutrons would it have?

• 9

• 6

• 19

• 10

What is the correct description of the isotope (version) of oxygen that is atomic number 8 and has a mass of 14?

• It has 8 protons, 6 neutrons

• It has 14 neutrons, and 6 protons

• It has 8 neutrons, and 6 protons

• It has 14 protons, and 8 neutrons

Tags

NGSS.MS-PS1-1