Basic Chem

Question 1

CO2; H2O - (the name) Anything that cannot be broken down into a simpler substance and retain its chemical properties

Answer 1

Element

Question 2

Smallest unit of matter that makes up an element

Answer 2

Atom

Question 3

multiple atoms combined

Answer 3

Molecule

Question 4

Simple molecules

Answer 4

Monomer

Question 5

Complex molecules (2 or more monomers linked together)

Answer 5

Polymer

Question 6

Monomers combine to FORM polymers by REMOVING a water molecule

(after evaporation comes ___ where water is removed to form a cloud)

Answer 6

Condensation

Question 7

Polymers BREAK DOWN to form monomers with the ADDITION of water molecules

(Add water hydro- ; rain breaks down sand castles; big to small break)

Answer 7

Hydrolysis

Question 8

carbohydrates, protein, lipids, and nucleic acids

molecules found in living systems than contain five or more carbon atoms

Answer 8

Biomolecules

Question 9

What are the 2 reactions?

Answer 9

Condensation and Hydrolysis

Question 10

What are the composition of the cells?

Answer 10

Element, Atom, Molecule

Question 11

Acidic pH

Answer 11

0 - 6.9

Question 12

Basic pH

Answer 12

7.1 - 14

Question 13

Neutral pH

Answer 13

7

Question 14

substances that stabilize pH

Answer 14

Buffers

Question 15

The ability to resist change in pH

Answer 15

Buffering capacity

Question 16

4 main Biomolecule Tests

Answer 16

Benedict’s Test - Simple Sugars
Lugol’s / Iodine Test - Starch
Sudan III Test - Lipids
Biuret Test - Proteins

Question 17

3 molecules we tested for?

Answer 17

Carbohydrates, lipids, proteins + Nucleic acids

Question 18

Benedict’s test

Answer 18

Carbohydrate - Presence of reducing sugars

Question 19

Benedicts Test / reducing sugars -

Presence of Sugars Color?

Answer 19

Green / Orange

Question 20

Benedicts Test / reducing sugars -

Absence of Sugars Color?

Answer 20

Blue

Question 21

Benedicts Test / reducing sugars -

Positive Control

Answer 21

Glucose Solution

Question 22

Iodine Test / Starch -

Positive Control

Answer 22

Starch

Question 23

Iodine Test / Starch -

Presence of Starch Color?

Answer 23

Black / Percipitate

Question 24

Iodine Test / Starch -

Absence of Starch Color?

Answer 24

Amber / yellow

Question 25

Sudan Test / Lipids - Lipids present color?

Answer 25

Bright orange stain

Question 26

Sudan Test / Lipids - NO Lipids present color?

Answer 26

No orange stain

Question 27

Sudan Test / Lipids - Less lipids present (weak +) color?

Answer 27

Light orange stain

Question 28

Sudan III is hydrophobic and will bind to

Answer 28

Hydrophobic lipids

Question 29

Sudan Test / Lipid - The filter paper needed to dry to ___

Answer 29

Remove the water present (cause its hydrophilic)

Question 30

Biuret's Test / Proteins - positive control?

Answer 30

albumin solution

Question 31

Biuret's Test / Proteins - presence of proteins color?

Answer 31

purple

Question 32

Biuret's Test / Proteins - absence of proteins color?

Answer 32

blue

Question 33

Dische diphenylamine tests are?

Answer 33

Nucleic Acids

Question 34

Dische diphenylamine tests can identify?

Answer 34

DNA

Question 35

Dische diphenylamine tests - presence of DNA color?

Answer 35

Blue

Question 36

Dische diphenylamine tests - absence of DNA color?

Answer 36

clear / no color

Question 37

What was the negative control in ALL experiments?

Answer 37

Distilled water

Question 38

Biuret’s Test - proteins present color?

Answer 38

Purple

Question 39

Molecules tested for?

Answer 39

Reducing sugars, proteins, starch, lipids

Question 40

Reagents?

Answer 40

The different types of tests -> Benedicts, Biuret, Iodine, Sudan III