3.2 - Practice #2

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

Tags

NGSS.MS-PS1-1

which atom has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons

Tags

NGSS.MS-PS1-1

which atom has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons

Tags

NGSS.MS-PS1-1

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.

• n⁰ ;  atomic #’s
• p⁺ ; atomic #’s
• e^- ; atomic masses
• n⁰ ; atomic masses

Tags

NGSS.HS-PS1-8

An atom is electrically neutral when

• protons and neutrons are the same
• protons and electrons are the same
• neutrons and electrons are the same
• neutrons balance the protons and electrons

Which charge is POSITIVE?

• Proton

• Neutron

• Electron

• Cell

Which charge is NEGATIVE?

• Proton

• Neutron

• Electron

• Cell

Which particle is NEUTRAL - NO CHARGE?

• Proton

• Neutron

• Electron

• Cell

What is the atomic # of iron?

• 55

• 56

• 26

• 2

Tags

NGSS.HS-PS1-1

How many protons does krypton have?

• 84

• 36

• 48

• 8

Tags

NGSS.MS-PS1-1