The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

Electrons have this type of charge?

• negative
• positive
• neutral

Tags

NGSS.MS-PS2-3

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

The particles that are found in the nucleus of an atom are

• neutrons and electrons
• electrons only
• protons and neutrons
• protons and electrons

Tags

NGSS.MS-PS1-1

What two particles determine the mass number?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

Tags

NGSS.HS-PS1-8

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

When an atom loses an electron, it becomes a(n) _____________ ion.

• positive

• negative

• neutral

• polyatomic

Tags

NGSS.HS-PS1-1

Two atoms of the same element but with different mass numbers are called________

• electrons
• isotopes
• variables
• electron cloud

Tags

NGSS.HS-PS1-8

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

Tags

NGSS.MS-PS1-1

What quantities vary between isotopes of an element?

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

Tags

NGSS.HS-PS1-8