Chem B Review of atoms & bonding

What is at the center of every atom?

• An electron

• A compound

• A molecule

• A nucleus

Tags

NGSS.HS-PS1-8

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

Tags

NGSS.HS-PS1-8

What is the role of an electron in an atom?

• Electrons live inside the nucleus and carry a neutral charge.
• Electrons circle the nucleus and have a positive charge.
• Electrons circle the nucleus and have a negative charge.
• Electrons live inside the nucleus and have a negative charge.

Which of the following determines the type of element that an atom makes?

• The size of the nucleus.
• The number of protons.
• How much the atom weighs.
• The number of neutrons.

Tags

NGSS.HS-PS1-1

A proton is a _____ charged particle.

• Negatively
• Positively

What is a cation's charge?

• positive

• negative

• neutral

• depends on the element

Tags

NGSS.HS-PS1-1

What is an anion's charge?

• positive

• negative

• neutral

• depends on the element's charge

What type of bond forms when 2 or more electrons are SHARED?

• Covalent bond
• Incomplete bond
• Ionic bond
• Metallic bond

Which of the following is an example of an IONIC COMPOUND?

• NaCl
• H₂O
• CO₂
• NO

Tags

NGSS.HS-PS1-2

Which of the following is an example of a COVALENT COMPOUND?

• H₂S
• KI
• CaCl₂
• MgO

Tags

NGSS.MS-PS1-1