Periodic Table

How many "valance electrons" are in chlorine?

• 7
• 2
• 17
• 8

Tags

NGSS.MS-PS1-1

How many Protons does Bromine have?

• 45
• 79.904
• 80
• 35

How many Neutrons does Bromine have?

• 35
• 80
• 45
• 79.905

Tags

NGSS.MS-PS1-1

A particle with a negative charge inside of an element is called

• isotope
• neutron
• proton
• electron

Does this carbon have the correct amount of electrons?

• Yes
• No, it needs one more
• No, it needs two more
• No, it needs three more

Tags

NGSS.MS-PS1-1

How many electrons are in the following chlorine atom?

• 7
• 8
• 17
• 13

Tags

NGSS.MS-PS1-1

What is titanium's atomic mass?

• 47.867
• 22
• 26
• 49

Tags

NGSS.HS-PS1-1

The atomic mass of Boron is 10.81, which means Boron has..

• 5 electrons and 6 protons, each weigh 1 amu
• 5 neutrons and 6 electrons, each weigh 1 amu
• 6 neutrons and 5 protons, each weigh 1 amu
• 10.81 protons each weighing around 1 amu

Tags

NGSS.MS-PS1-1

How many protons does this atom have?

• 2.5
• 6
• 5
• 10.811

Tags

NGSS.MS-PS1-1

In order for me to find the number of neutrons, I must round the atomic mass and then do what?

• atomic number-atomic mass
• atomic number x atomic mass
• atomic mass + atomic number
• atomic mass - atomic number

Tags

NGSS.MS-PS1-1