Atomic Structure and Periodic Table lvl. 3

The mass of one proton is greater than the mass of one...

• neutron
• electron

Tags

NGSS.MS-PS1-1

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

• 12 neutrons
• 12 electrons
• 12 protons
• 24 protons and neutrons

Tags

NGSS.MS-PS1-1

What is a pure substance that cannot be broken down?

• matter
• atom
• molecule
• element

What do the following properties describe? : shiny, ductile, good conductor, high melting point

• metal
• nonmetal
• metalloid

Tags

NGSS.HS-PS1-1

Which is an example of a nonmetal?

• Platinum
• Carbon
• Silver
• Lead

Tags

NGSS.HS-PS1-1

Which is an example of a metalloid?

• Boron
• Lead
• Radon
• Gold

Which is an example of a metal?

• Radon
• Oxygen
• Aluminium
• Carbon

Elements in the periodic table are arranged in order by their ...

• atomic number
• atomic mass (mass number)
• metal, nonmetal, or metalloid properties

How many proton are in this element?

• 238
• 92
• 146

Tags

NGSS.MS-PS1-1

How many electrons are in this element?

• 238
• 92
• 146

Tags

NGSS.MS-PS1-1