Chemistry 103--chap. 1

Question 1

chemistry definition

Answer 1

the study of composition, properties, and transformations of matter

Question 2

scientific method

Answer 2

process of involving the formulation of questions and conjectures arising from observations, careful designs of experiments, and analysis results

Question 3

experiment definition

Answer 3

procedure to test the hypothesis; change 1 variable at a time

Question 4

observations definition

Answer 4

systematic recording of quantitative/qualitative data

Question 5

theory definition

Answer 5

unified principle that explains experimental results; predicts outcomes

Question 6

hypothesis definition

Answer 6

tentative explanation for observations (doesn’t have to be correct)

Question 7

peptides

Answer 7

amino acid molecules linked together to form chains

Question 8

amino acids

Answer 8

molecule that contains an amine group and acidic carboxyl group to make proteins

Question 9

molecular models

Answer 9

simplified versions of the way models are connected in a 3D arrangement

Question 10

what is the SI unit for mass

Answer 10

kilograms (kg)

Question 11

what is the SI unit for length

Answer 11

meters (m)

Question 12

what is the SI unit for temperature

Answer 12

kelvin (K)

Question 13

what is the SI unit for amount of substance

Answer 13

mole (mol)

Question 14

what is the SI unit for time

Answer 14

second (s)

Question 15

what is the SI unit for electric current

Answer 15

ampere (A)

Question 16

what is the SI unit for luminous intensity

Answer 16

candela (cd)