Chemistry

Question 1

CHEMISTRY

Answer 1

The composition of substances and changes in composition

Question 2

MATTER

Answer 2

Anything that has mass and takes up space

Question 3

ATOMS

Answer 3

Smallest unit of matter hat can enter a chemical reaction

Question 4

MECULES

Answer 4

Two or more atoms

Question 5

ELEMENTS

Answer 5

Pure-molecules composed of only one kind of atom

Question 6

COMPOUNDS

Answer 6

Molecules composed of more than one kind of atom

Question 7

IONS

Answer 7

• Electrically charged atoms.

* Form when an atom gains or loses electrons

Question 8

CATIONS(+)

Answer 8

Form when an atom loses electrons

Question 9

ANIONS(-)

Answer 9

Form when an atom gains electrons

Question 10

IONIC BOND

Answer 10

Formed by the TRANSFER of electrons

Question 11

COVALENT BOND

Answer 11

Formed by the sharing of electrons

Question 12

HYDROGEN BOND

Answer 12

H attracted to N or O forms very weak bonds.

Question 13

INORGANIC COMPOUNDS

Answer 13

Do not contain carbon

Question 14

ORGANIC COMPOUNDS

Answer 14

Contain more than one carbon

Four major categories: carbohydrates, lipids, proteins, nucleic acids

Question 15

MONOMER

Answer 15

Building block, unit can be absorbed, transported and utilized by the system

Question 16

DNA

Answer 16

Double stranded (helix)
Replicates
Deoxyribose
Nucleus
Thymine

Question 17

RNA

Answer 17

Cytoplasm
Uracil (replaces thymine)
Ribose 
Single stranded 
Evolves from DNA