Periodic Table & Carbohydrates

Electrons are subatomic particles that have a _____________ charge.

• negative

• positive

• neutral

Protons are subatomic particles that have a _____________ charge.

• negative

• positive

• neutral

Neutrons are subatomic particles that have a _____________ charge.

• negative

• positive

• neutral

Two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in atomic mass but not in chemical properties

• atom

• isotope

• element

• electron

What is an ion?

• ONLY a positively charged atom or molecule

• ONLY a negatively charged atom or molecule

• an atom or molecule with a charge

• a neutral atom or molecule

Atoms in molecules are held together by covalent bonds. Atoms in a covalent bond ...

• share the electrons

• transfer the electrons to the more negative atom

• transfer the electrons to the less negative atom

• push all electrons away from both atoms.

Atoms in ionic solids are held together by ionic bonds. Ionic bonds form when...

• electrons are transferred from one atom to another

• electrons are shared

• electrons are rejected by both atoms

• electrons aren't used in bonding

A molecule that is attracted to water (likes water)

• hydrophobic

• hydrophilic

• hydrogen bonding

• atoms

A molecule that is not attracted to water (fears water)

• Hydrophobic

• Hydrophilic

• Hydrogen bonding

• atoms

Polar molecules (example: water) are attracted to each other. Hydrogen bonded to oxygen or nitrogen atoms are attracted to nearby oxygen or nitrogen. This strong attraction is called

• hydrogen bonding

• covalent bonding

• ionic bonding

• atoms