California Science Test (CAST) – Practice Exam with
Questions and Answers (Grade-Level Science
Preparation)
Diamond - correct answer ✔✔ A crystalline form in which each carbon atom is bonded to four
other carbon atoms
Graphite - correct answer ✔✔ Each carbon atom is bonded to three other carbon atoms in flat
layers
Fullerene - correct answer ✔✔ Carbon atoms arranged in a sphere
Nanotube - correct answer ✔✔ Carbon atoms arranged in the shaped of a long, hollow cylinder
Organic Compound - correct answer ✔✔ Compounds that contain carbon
Hydrocarbon - correct answer ✔✔ Compound containing only carbon and hydrogen
Structural Formula - correct answer ✔✔ Shows the kind, number, and arrangement, of atoms in
a molecule
Isomer - correct answer ✔✔ Compounds that have the same chemical formula but different
structural formulas
Unsaturated Hydrocarbon - correct answer ✔✔ Has double or triple bonds - have fewer
hydrogen atoms
,Saturated Hydrocarbon - correct answer ✔✔ Has only single bonds with a maximum number of
hydrogen atoms
Substituted Hydrocarbon - correct answer ✔✔ Atoms of other elements replace one or more
hydrogen atoms
Hydroxyl Group - correct answer ✔✔ Each -OH, made of an oxygen atom and a hydrogen atom
Alcohol - correct answer ✔✔ A hydroxyl group (OH) replaces one or more hydrogen atoms
Organic Acid - correct answer ✔✔ A carboxyl group (COOH) replaces one or more hydrogen
atoms
Carboxyl Group - correct answer ✔✔ Written as -COOH
Ester - correct answer ✔✔ Chemical made when an alcohol and an organic acid combine
Polymer - correct answer ✔✔ A very large molecule made of many smaller molecules bonded
together
Monomer - correct answer ✔✔ Smaller molecules
Protein - correct answer ✔✔ Large organic molecule made from amino acids
Amino Acid - correct answer ✔✔ A monomer that is a building block of proteins
Plastic - correct answer ✔✔ Synthetic polymers that can be molded or shaped
, Composite - correct answer ✔✔ Combines two or more substances in a new material with
different properties
Carbohydrate - correct answer ✔✔ Energy rich organic compounds made from carbon,
hydrogen, and oxygen
Glucose - correct answer ✔✔ One of the most important sugars in your body
Complex Carbohydrate - correct answer ✔✔ Polymer made of smaller molecules that are
simple carbohydrates bonded to one another
Starch - correct answer ✔✔ Plants store energy in the form of the complex carbohydrate
Cellulose - correct answer ✔✔ Strong stems and roots from plants built with the complex
carbohydrate
Lipid - correct answer ✔✔ Energy rich organic compounds made from carbon, oxygen, and
hydrogen
Fatty Acid - correct answer ✔✔ Fat which chemical structure has caused it to become a liquid
Cholesterol - correct answer ✔✔ A waxy lipid found in animal cells
Nucleic Acid - correct answer ✔✔ A very large organic molecule made up of a carbon, oxygen,
hydrogen, nitrogen, and phosphorus
Questions and Answers (Grade-Level Science
Preparation)
Diamond - correct answer ✔✔ A crystalline form in which each carbon atom is bonded to four
other carbon atoms
Graphite - correct answer ✔✔ Each carbon atom is bonded to three other carbon atoms in flat
layers
Fullerene - correct answer ✔✔ Carbon atoms arranged in a sphere
Nanotube - correct answer ✔✔ Carbon atoms arranged in the shaped of a long, hollow cylinder
Organic Compound - correct answer ✔✔ Compounds that contain carbon
Hydrocarbon - correct answer ✔✔ Compound containing only carbon and hydrogen
Structural Formula - correct answer ✔✔ Shows the kind, number, and arrangement, of atoms in
a molecule
Isomer - correct answer ✔✔ Compounds that have the same chemical formula but different
structural formulas
Unsaturated Hydrocarbon - correct answer ✔✔ Has double or triple bonds - have fewer
hydrogen atoms
,Saturated Hydrocarbon - correct answer ✔✔ Has only single bonds with a maximum number of
hydrogen atoms
Substituted Hydrocarbon - correct answer ✔✔ Atoms of other elements replace one or more
hydrogen atoms
Hydroxyl Group - correct answer ✔✔ Each -OH, made of an oxygen atom and a hydrogen atom
Alcohol - correct answer ✔✔ A hydroxyl group (OH) replaces one or more hydrogen atoms
Organic Acid - correct answer ✔✔ A carboxyl group (COOH) replaces one or more hydrogen
atoms
Carboxyl Group - correct answer ✔✔ Written as -COOH
Ester - correct answer ✔✔ Chemical made when an alcohol and an organic acid combine
Polymer - correct answer ✔✔ A very large molecule made of many smaller molecules bonded
together
Monomer - correct answer ✔✔ Smaller molecules
Protein - correct answer ✔✔ Large organic molecule made from amino acids
Amino Acid - correct answer ✔✔ A monomer that is a building block of proteins
Plastic - correct answer ✔✔ Synthetic polymers that can be molded or shaped
, Composite - correct answer ✔✔ Combines two or more substances in a new material with
different properties
Carbohydrate - correct answer ✔✔ Energy rich organic compounds made from carbon,
hydrogen, and oxygen
Glucose - correct answer ✔✔ One of the most important sugars in your body
Complex Carbohydrate - correct answer ✔✔ Polymer made of smaller molecules that are
simple carbohydrates bonded to one another
Starch - correct answer ✔✔ Plants store energy in the form of the complex carbohydrate
Cellulose - correct answer ✔✔ Strong stems and roots from plants built with the complex
carbohydrate
Lipid - correct answer ✔✔ Energy rich organic compounds made from carbon, oxygen, and
hydrogen
Fatty Acid - correct answer ✔✔ Fat which chemical structure has caused it to become a liquid
Cholesterol - correct answer ✔✔ A waxy lipid found in animal cells
Nucleic Acid - correct answer ✔✔ A very large organic molecule made up of a carbon, oxygen,
hydrogen, nitrogen, and phosphorus
