Chemistry Final Review

What charge does the nucleus have and why?

• positive - the neutrons do not have a charge

• positive - the neutrons and protons are positively charged particles

• neutral - the neutral charge dominates the positive charge

• neutral - electrons cancel out the positive charge of the atom

Tags

NGSS.MS-PS1-1

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon

• 16 - Oxygen

• 24 - Oxygen

• 8 - Neon

Tags

NGSS.MS-PS1-1

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

• 11

• 5

• 6

• 16

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons

• Protons and neutrons

• Neutrinos and positrons

• Electrons and megatrons

Tags

NGSS.HS-PS1-8

How many electrons does Si contain? (click to see image)

• 14

• 28

• 2

• 4

Tags

NGSS.MS-PS1-1

Fluorine, chlorine, bromine, iodine, and astatine make up Group 17, the halogens. Why are these elements grouped together?

• They are all very reactive nonmetals with similar chemical properties.

• They are all nonreactive gases with similar physical properties.

• Their atoms all have eight electrons in their outer energy levels.

• They all have the same atomic number.

Which of the following best describes the properties of metals?

• hard, brittle, and nonconductive

• liquid, dark, and conductive
  

• shiny, malleable, and conductive

• soft, oily, and very reactive

The atoms along the staircase are called 

• metals

• nonmetals

• metalloids

• noble gases

Group 18 elements are known as the _____ _____ and have full valence shells.

• royal gases.

• supreme solids.

• noble gases.

• legit liquids.

What period and group is Silver (Ag)? 

• Period 2, Group 1

• Period 3, Group 16

• Period 5, Group 11

• Period 2, 14