2.1 INORGANIC Biochemistry

What is the ATOMIC NUMBER of this atom? (tap to zoom in)

• 2
• 6
• 3
• 0

What is the ATOMIC MASS of this atom? (tap to zoom in)

• 3
• 6
• 2
• 0

What is the CHARGE of this atom? (tap to zoom in)

• -1
• 0
• -3
• +1

What is the ATOMIC NUMBER of this atom? (tap to zoom in)

• 6
• 12
• 11
• 5

What is the ATOMIC MASS of this atom? (tap to zoom in)

• 12
• 6
• 11
• 0

What is the CHARGE of this atom? (tap to zoom in)

• 0
• -6
• +5
• -1

An element is

• A pure substance
• 2 or more atoms bonded together
• A charged particle
• The basic unit of life

If Fe has a charge of +2, what is true about this atom?

• There are more protons than electrons
• There are more electrons than protons
• It is a negative ion
• It is neutral

Put these chemical bonds in order from STRONGEST to WEAKEST

• Covalent, ionic, hydrogen
• Covalent, hydrogen, ionic
• Hydrogen, ionic, covalent
• Hydrogen, covalent, ionic

What makes water a polar molecule?

• because it has a slight positive charge at one end, and a slight negative charge at the other
• because oxygen has stolen a proton from hydrogen
• because one electron has been transferred from oxygen to hydrogen
• because the two hydrogen atoms are pulling the shared electrons towards their nucleus