Atomic Structure

What is atomic number?

• Number of protons in an atoms 
• Number of neutrons in an atom
• Mass of an atom
• Charge on an atom

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

Tags

NGSS.MS-PS1-1

What electrical charge does a proton have?

• +1
• 0
• -1
• +2

The total number of protons and neutrons in an atom is called the...

• Atomic number
• Proton number
• Mass number
• Weight number

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons

Tags

NGSS.HS-PS1-7

The _________ of an element equals the number of protons in an atom of that element.

• mass number

• atomic weight

• atomic number

• isotopes

What is the mass number of a nickel atom with 28 protons, 31 neutrons, and 28 electrons?

• 31

• 28

• 59

• 87

Element:Fe

• Gold
• Flourine
• Phosphorus
• Iron

Tags

NGSS.MS-PS1-1

What is this element...Au

• Iron
• Titanium
• Gold
• Flourine

Tags

NGSS.MS-PS1-1

Element is a

• pure substance
• compound
• mixture
• molecule