How many protons does gold atom have?

• 197
• 79
• 118
• 276

What is the mass of a proton?

• 1
• 2
• -1
• 0

What is the charge of an electron?

• 1
• 0
• -1
• 4

What is an alpha particle?

• 1 high speed electron
• 2 protons
• 2 neutrons
• 2 protons + 2 neutrons

Tags

NGSS.HS-PS1-8

What is the mass of an alpha particle?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-8

If radiation is detected through paper, which 2 types could it be?

• Alpha & beta
• Beta & gamma
• Alpha & gamma

Tags

NGSS.HS-PS1-8

Which is the most highly ionizing?

• Alpha
• Beta
• Gamma

Tags

NGSS.HS-PS1-8

What is the definition of an isotope?

• An atom with different electron number to proton number
• An atom with different proton number from neutron number
• An atom with different number of protons from the periodic table
• An atom with a different number of neutrons from the periodic table

Tags

NGSS.HS-PS1-8

Iodine-131 has a half life of 8 days.  A sample starts with 3000 counts per second.  How many days will it take to have a count rate of 94 days?

• 32 days
• 40 days
• 375 days
• 16 days

What happens during beta decay?

• Neutron turns into a proton; proton number goes up by 1, mass number stays the same.
• Neutron turns into a proton; proton number stays the same, mass number goes up by 1.
• It releases 2 protons + 2 neutrons; mass number decreases by 4, proton number decreases by 2
• Proton turns into a neutron; proton number goes up by 1, mass number stays the same.