CHEM 210 Module 1questions and
100%correct answers 2026 exams
1.Chemistry :Answer elements that are critical in living organisms
2.Carbon :Answer - critical in all living things
- found in large amounts
3.Bulk elements :Answer H, Na, K, Ca, C, N, O, P, S, Cl
4.Trace elements :Answer Mg, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Se, I
- transition metals
5. Bond angle :Answer
Linear :Answer 180 degrees
- carbon dioxide
6.Bond angle of Trigonal
Planar :Answer 120 degrees
7.Bond angle of Trigonal
pyramidal :Answer 107.5 degrees
- ammonia
- Nitrogen is always trigonal
8. Bond angle of a
Tetrahedral :Answer 109.5 degrees
- methane
- carbon atoms with all single bonds are tetrahedral
9. Water :Answer "medium of life"
- H20
- 104.5 degrees (bent)
- 18 g/mol
- Can make up to 90% of a living organism
- Not organic :Answer doesn't contain carbon
,10. Bond Angle :Answer Results due to the repulsion of the electrons
in chemical bonds.
11. Proteins :Answer Biological molecules that perform work in living
organisms
- Amine, benzene, carboxylic acid, thiol
12. Luciferin :Answer Glows when acted upon by a protein (luciferase)
- bioluminescence metabolism
- fireflies light up as a way of mating
- organic molecule (contains carbon) that is the light-producing
compound found in lightning bugs - carbon double bonds
13. Biochemistry :Answer Chemistry of life
- how the properties of organisms relate to their molecules
14. Biochemists study (3) :Answer :Answer 1) relationship between structure
and function of biomolecules
2)chemical reactions of organisms (metabolism)
3)communication between organisms
15. Covalent bonds :Answer Bonds created by sharing electrons with
other atoms
- smaller elements form the strongest stable covalent bonds due to
overlap
- larger elements DO NOT form stable covalent bonds, or covalent
bonds at all
- O2 and H are found in large amounts
16. Organic Chemistry :Answer the study of compounds containing
carbon
- superglue of chemical world
- Has 4 valence electrons permitting it to form 4 bonds
- Forms long chains (polymers)
- Forms double and triple bonds
- Forms ring compounds (cyclic compounds)
-ADVANTAGE :Answer building structures and maintaining shape
- Forms bonds with many other atoms, including H, N, and O
, 17. Inorganic Chemistry :Answer Metals, minerals, and other non-
organic compounds
18. Acetylene :Answer Triple bond carbon-carbon
19. Alkenes :Answer Compounds are straight-chain compounds with
only carbon and hydrogen.
- carbon-carbon double bonds
20. Methane :Answer
1 carbon
Chemical
formula :Answer CH4
Condensed
formula :Answer CH4
21 Ethane :Answer 2
carbons
Chemical
formula :Answer C2H6
Condensed
formula :Answer
CH3CH3
22. Propane :Answer 3
carbons
Chemical
formula :Answer C3H8
Condensed
formula :AnswerCH3C H2CH3
23. Butane :Answer 4
carbons
Chemical formula :Answer C4H10
Condensed formula :AnswerCH3CH2CH2CH3
24. Pentane :Answer 5 carbons
100%correct answers 2026 exams
1.Chemistry :Answer elements that are critical in living organisms
2.Carbon :Answer - critical in all living things
- found in large amounts
3.Bulk elements :Answer H, Na, K, Ca, C, N, O, P, S, Cl
4.Trace elements :Answer Mg, V, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Se, I
- transition metals
5. Bond angle :Answer
Linear :Answer 180 degrees
- carbon dioxide
6.Bond angle of Trigonal
Planar :Answer 120 degrees
7.Bond angle of Trigonal
pyramidal :Answer 107.5 degrees
- ammonia
- Nitrogen is always trigonal
8. Bond angle of a
Tetrahedral :Answer 109.5 degrees
- methane
- carbon atoms with all single bonds are tetrahedral
9. Water :Answer "medium of life"
- H20
- 104.5 degrees (bent)
- 18 g/mol
- Can make up to 90% of a living organism
- Not organic :Answer doesn't contain carbon
,10. Bond Angle :Answer Results due to the repulsion of the electrons
in chemical bonds.
11. Proteins :Answer Biological molecules that perform work in living
organisms
- Amine, benzene, carboxylic acid, thiol
12. Luciferin :Answer Glows when acted upon by a protein (luciferase)
- bioluminescence metabolism
- fireflies light up as a way of mating
- organic molecule (contains carbon) that is the light-producing
compound found in lightning bugs - carbon double bonds
13. Biochemistry :Answer Chemistry of life
- how the properties of organisms relate to their molecules
14. Biochemists study (3) :Answer :Answer 1) relationship between structure
and function of biomolecules
2)chemical reactions of organisms (metabolism)
3)communication between organisms
15. Covalent bonds :Answer Bonds created by sharing electrons with
other atoms
- smaller elements form the strongest stable covalent bonds due to
overlap
- larger elements DO NOT form stable covalent bonds, or covalent
bonds at all
- O2 and H are found in large amounts
16. Organic Chemistry :Answer the study of compounds containing
carbon
- superglue of chemical world
- Has 4 valence electrons permitting it to form 4 bonds
- Forms long chains (polymers)
- Forms double and triple bonds
- Forms ring compounds (cyclic compounds)
-ADVANTAGE :Answer building structures and maintaining shape
- Forms bonds with many other atoms, including H, N, and O
, 17. Inorganic Chemistry :Answer Metals, minerals, and other non-
organic compounds
18. Acetylene :Answer Triple bond carbon-carbon
19. Alkenes :Answer Compounds are straight-chain compounds with
only carbon and hydrogen.
- carbon-carbon double bonds
20. Methane :Answer
1 carbon
Chemical
formula :Answer CH4
Condensed
formula :Answer CH4
21 Ethane :Answer 2
carbons
Chemical
formula :Answer C2H6
Condensed
formula :Answer
CH3CH3
22. Propane :Answer 3
carbons
Chemical
formula :Answer C3H8
Condensed
formula :AnswerCH3C H2CH3
23. Butane :Answer 4
carbons
Chemical formula :Answer C4H10
Condensed formula :AnswerCH3CH2CH2CH3
24. Pentane :Answer 5 carbons
