Element Identification

How many protons are in an atom of Sodium?

• 11

• 22.990

• exactly 11.99

• about 12

Tags

NGSS.MS-PS1-1

What is the atomic number of Sodium?

• 11

• 22.990

• exactly 11.99

• about 12

Tags

NGSS.MS-PS1-1

made up of atoms with the same number of protons joined together by chemical bonds

• molecule

• element

• atom

• compound

Tags

NGSS.MS-PS1-1

smallest unit of an element that cannot be broken down by any chemical means

• molecule

• element

• atom

• compound

How many electrons are in an atom of Sodium?

• 11

• 22.990

• exactly 11.99

• about 12

Tags

NGSS.MS-PS1-1

What is the atomic mass of Sodium?

• 11

• 22.990

• exactly 11.99

• about 12

If an element has an atomic number of 42, how many protons does it have?

• There's no way to know without knowing its mass.

• 21

• 42

Which of the following is a noble gas?

• Oxygen

• Nitrogen

• Helium

• Carbon

What is the atomic number of Carbon?

• 6

• 12

• 14

• 16

Which element is represented by the symbol 'Fe'?

• Fluorine

• Iron

• Francium

• Fermium