Atomic Theory Test

Which description about the proton is NOT True?

• A subatomic particle that lives in the nucleus

• Changing the protons changes the identity of an element

• Positively charged particle with a mass of 1 amu
• It is the same as the mass number

Tags

HS-PS1-1

Which statement is true about the MASS of subatomic particles?

• 1 neutron + 1 electron = -1

• 1 proton + 1 electron = 0

• 1 proton = 1 electron

• 4 protons = 4 neutrons

Tags

NGSS.MS-PS1-1

Which of the following is NOT an accurate description of the nucleus?

• positively charged from the protons
• extremely dense from neutrons and protons
• negatively charged
• in the center of the atom

The number of protons is always the same as what?

• atomic number
• atomic mass

• number of neutrons

• number of electrons

What is the atomic symbol for an atom with 31 protons and 38 neutrons?

• Sr

• Tm

• N

• Ga

How many protons are in Xenon

• 54

• 77

• 131

• 185

Tags

NGSS.MS-PS1-1

Match the following with the correct number of protons.

• 19

• Be

• 9

• F

• 15

• K

• 30

• Zn

• 4

• P

An atom with 23 protons, and 20 electrons and a mass of 51 has how many neutrons?

• 23

• 43

• 28

• 51

Tags

NGSS.MS-PS1-1

What is the mass number for this Copper atom?

• 94

• 65

• 36

• 29

What is the name of the pictured isotope?

• Fluorine-9^-1

• Fluorine-10^-1

• Fluorine-19^-1

• Fluorine-28^-1

Tags

NGSS.HS-PS1-8