MS Chemistry

Sodium has an atomic number of 11, how many protons does this atom have?

• 22

• 11

• 12

• 2

Tags

NGSS.MS-PS1-1

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

Tags

NGSS.MS-PS1-1

How many valence electrons does Neon (a noble gas) Have?

• 5 Valence electron

• 6 Valence electron

• 7 Valence electron

• 8 Valence electron

• 9 valence electrons

Subatomic particles with a negative charge are called

• Electrons

• Neutrons

• Protons

• Quarks

How many neutrons does Bromine have?

• 45

• 70

• 80

• 35

Answer explanation

First, round the atomic mass from 79.904 up to 80.

Then, subtract the number of protons to figure out the number of neutrons.

80 - 35 protons = 45 neutrons

Tags

NGSS.MS-PS1-1

Why are sodium and chlorine ions attracted to each other?

• they have opposite charges

• they both have negative charges

• they both have positive charges

Tags

NGSS.MS-PS2-5

Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

Ionic bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

How are ionic bonds formed?

• By transferring electrons from a metal to a non-metal

• By two non-metals sharing electrons

Where are the nonmetals located on the periodic table? 

• Blue
• Red
• Green