atomic structure practice

What is the name of the center part of an atom?

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

• Proton

• Neutron

• Electron

Which subatomic particle is NOT found in the nucleus?

• Proton

• Neutron

• Electron

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• the mass #

Elements are represented by chemical symbol.  Symbols are written with

• all lower case letters.
• all capital letters.
• always only one  letter.
• at least and ONLY one capital letter.

The subatomic particles in red are

• Electrons
• Neutrons
• Protons

Tags

NGSS.MS-PS1-1

What is the biggest difference between an atom of cobalt (Co) and an atom of nickel (Ni), as shown in the periodic table entries?

• An atom of nickel has more protons.
• An atom of cobalt has more electrons.
  
• An atom of cobalt has a lower number of neutrons.
  
• An atom of nickel has a higher value for atomic mass.

Tags

NGSS.MS-PS1-1

How many electrons does Oxygen have?

• 16

• 8

• 15.99

• O

Tags

NGSS.MS-PS1-1

True or False - Protons and Neutrons have about the same mass.

• True - They have about the same mass
• False - They do not have about the same mass