Atoms

Question 0

What is hydrophilic

Answer 0

A molecule that loves water

Question 1

What is hydrophobic

Answer 1

Molecule that fears water

Question 2

Hydrogen bonds

Answer 2

Makes water unique. Has the ability to stick together.

Question 3

Polarity of water

Answer 3

• within water molecule, bonds between oxygen and hydrogen are highly polar
• oxygen is more electronegative than hydrogen

Question 4

What is a reactant?

Answer 4

The original molecules in a equation

Question 5

What is a product?

Answer 5

Molecules resulting from a reaction

Question 6

What are chemical reactions?

Answer 6

This involves the formation or breaking of chemical bonds

• atoms shift from one molecule to another without and change in number of identity of atoms.

Question 7

Polar covalent bonds

Answer 7

Unequal sharing of electrons

Question 8

Non polar covalent bonds

Answer 8

Equal sharing of electrons

Question 9

What are covalent bonds?

Answer 9

This forms when atoms share 2 or more valence electrons.

• results in no net charge. Satisfies Octet rule
• strength of bonds depends on # of shared electrons.

Question 10

What are ionic bonds

Answer 10

Formed by the attraction of oppositely charged ions.

This results in gain or loss of electrons

Question 11

What is the Bohr model?

Answer 11

Electrons In discrete orbits around a nucleus

Question 12

Octet rule

Answer 12

Atoms tend to establish completely full out energy levels

Question 13

4 elements that make up the body

Answer 13

Carbon, hydrogen, oxygen, nitrogen

Question 14

What is redox?

Answer 14

During some chemical reactions, electrons can be transferred from 1 atom to another.

Question 15

What is oxidation?

Answer 15

Loss of an electron from an atom

Question 16

What is reduction?

Answer 16

Gain of an electron from an atom

Question 17

What are the Energy levels of electrons

Answer 17

Electrons further from the nucleus have more energy.

Question 18

What is an isotope?

Answer 18

Atoms of a single element that possess different # of neutrons

Question 19

Atomic mass

Answer 19

Sum of protons and neutrons

Question 20

Ions

Answer 20

Charged particles, unbalanced. Rather than neutral atoms

Question 21

What is Cation in an atom?

Answer 21

More protons than electrons. This is a net positive charge

Question 22

What is anion in an atom?

Answer 22

Fewer protons than electrons. This is a negative charge.

Question 23

Valence electrons

Answer 23

of electrons in outermost energy level

Question 24

What happens if an atom is inert?

Answer 24

It is non reactive, elements have all eight electrons.