CSET Multiple Subject Subtest 2 Science Comprehensive
Resource To Help You Ace 2026-2027 Includes Frequently
Tested Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! (Current Update!!)
1. Matter - Correct Answer: -Anything that has mass and occupies space
-Everything you see and touch is composed of matter
-Three states of matter are solids, liquids, and gases
2. Solids - Correct Answer: -Characterized by their ability to retain their shape
-Relatively incompressible
-Melt when heated and vaporize only slightly
-All substances become solid if cooled sufficiently
3. Examples: rocks, crystals, wood, feather, ice
4. Liquids - Correct Answer: -Take on the shape of their containers, yet cannot be
compressed to any significant extent
-The volume of a liquid is constant unless evaporation is occurring
-Liquids when chilled sufficiently, while heat causes liquids to vaporize
-The liquid state is intermediate between the solid and gaseous states with regard to
molecular motion and attractive forces between molecules
Examples: water, oil, milk, honey
5. Gases - Correct Answer: -Expand to fill any available space
, -A gas is a compressible fluid, with its volume determined by the pressure and
temperature of the environment
-A compressed gas pushes out equally in all directions
-Boyle's Law: If the pressure increases, the volume decreases; the reverse is true as well
-Charles's Law: As temperature increases (at a fixed pressure), so does volume
Examples: air, helium, steam
6. Sublimination - Correct Answer: Makes it possible for some elements and
compounds to transition from a solid to gas phase without becoming a liquid
Example: a block of dry ice (CO2), which will turn into a gas at room temperature
7. Deposition - Correct Answer: Some gases can transition directly to a solid
Example: the formation of frost
8. Mass - Correct Answer: -The amount of matter in a chemical substance
-In everyday usage, mass is commonly confused with weight
9. Weight - Correct Answer: -In physics and engineering, weight means the strength of
the gravitational pull on the object (how heavy it is, measured in newtons)
-In everyday situations, the weight of an object is proportional to its mass, which usually
makes it acceptable to use the same word for both concepts
10. Density - Correct Answer: -For a homogeneous object, density is determined by
dividing the mass by the volume (D = M/V)
-The mass is normally measured with an appropriate scale or balance
-The volume may be measured directly (from the geometry of the object) or by the
displacement of a fluid
Example: If steel and wood have equal dimensions, the steel would have a greater mass
as it is more dense
,11. Hardness - Correct Answer: -Refers to various properties of matter in the solid phase
that give it a high resistance to its shape changing when force is applied
-Hard matter is contrasted with soft matter
-However, the behavior of solid materials under force is complex, resulting in several
different scientific definitions of what might be called hardness in everyday usage
-Three principal operational definitions of hardness: scratch hardness, indentation
hardness, and rebound hardness
12. Scratch hardness - Correct Answer: Resistance to fracture or plastic (permanent)
deformation due to friction from a sharp object
13. Indentation hardness - Correct Answer: Resistance to plastic (permanent)
deformation due to a constant load from a sharp object
14. Rebound hardness - Correct Answer: Height of the bounce of an object dropped o
the material, related to elasticity
15. Mohs' scale of hardness - Correct Answer: -Rates minerals and puts them on a scale
from 1 to 10 (1 is the softest and 10 is the hardest) determined by the ability of a harder
mineral to scratch a softer mineral
-Talc is at 1 and diamond is at 10
16. Physical properties - Correct Answer: -The characteristics that makes up the physical
composition of a substance
-Include color, form, electrical conductivity, and density
17. Physical changes - Correct Answer: -Involve one substance changing states (not one
substance changing into another)
-Typically reversible
, Example: water
-Can change from a gas (water vapor) to a liquid (water) to a solid (ice), but the water
molecules do not change
-The particular state of water is determined by pressure and temperature
-The dashed lines show the behavior of water at one atmosphere (sea level), freezing at
0°C (32°F), and boiling at 100°C (212°F)
-At other pressures, the freezing and boiling temperatures for water differ from the
familiar values
18. Chemical changes - Correct Answer: -A change of one substance into a different
substance
-Occurs whenever compounds are formed or decomposed
-During this reaction, there is a rearrangement of atoms that makes or breaks chemical
bonds
-This change is usually not reversible, unlike physical changes
Example: The formation of rust
-Iron chemically reacts with air and water to form rust (ferrous oxide) and is unable to
change back to iron
19. Chemical reactions - Correct Answer: Show the number of molecules or formula
units of the reactants and products
Example: nitrous oxide is a colorless, odorless gas that causes mild hysteria when
inhaled, hence the name laughing gas; it is prepared by heating ammonium nitrate
crystals
20. Atoms - Correct Answer: -Made up of several tiny parts
-At the center of an atom is a core called the nucleus
-The nucleus is made up of particles called protons and neutrons
-Protons have a positive electrical charge, and neutrons have no charge
-Electrons move around the nucleus in electron clouds
-Electrons have a negative charge, and they are attracted to the positively charged
protons in the nucleus
Resource To Help You Ace 2026-2027 Includes Frequently
Tested Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! (Current Update!!)
1. Matter - Correct Answer: -Anything that has mass and occupies space
-Everything you see and touch is composed of matter
-Three states of matter are solids, liquids, and gases
2. Solids - Correct Answer: -Characterized by their ability to retain their shape
-Relatively incompressible
-Melt when heated and vaporize only slightly
-All substances become solid if cooled sufficiently
3. Examples: rocks, crystals, wood, feather, ice
4. Liquids - Correct Answer: -Take on the shape of their containers, yet cannot be
compressed to any significant extent
-The volume of a liquid is constant unless evaporation is occurring
-Liquids when chilled sufficiently, while heat causes liquids to vaporize
-The liquid state is intermediate between the solid and gaseous states with regard to
molecular motion and attractive forces between molecules
Examples: water, oil, milk, honey
5. Gases - Correct Answer: -Expand to fill any available space
, -A gas is a compressible fluid, with its volume determined by the pressure and
temperature of the environment
-A compressed gas pushes out equally in all directions
-Boyle's Law: If the pressure increases, the volume decreases; the reverse is true as well
-Charles's Law: As temperature increases (at a fixed pressure), so does volume
Examples: air, helium, steam
6. Sublimination - Correct Answer: Makes it possible for some elements and
compounds to transition from a solid to gas phase without becoming a liquid
Example: a block of dry ice (CO2), which will turn into a gas at room temperature
7. Deposition - Correct Answer: Some gases can transition directly to a solid
Example: the formation of frost
8. Mass - Correct Answer: -The amount of matter in a chemical substance
-In everyday usage, mass is commonly confused with weight
9. Weight - Correct Answer: -In physics and engineering, weight means the strength of
the gravitational pull on the object (how heavy it is, measured in newtons)
-In everyday situations, the weight of an object is proportional to its mass, which usually
makes it acceptable to use the same word for both concepts
10. Density - Correct Answer: -For a homogeneous object, density is determined by
dividing the mass by the volume (D = M/V)
-The mass is normally measured with an appropriate scale or balance
-The volume may be measured directly (from the geometry of the object) or by the
displacement of a fluid
Example: If steel and wood have equal dimensions, the steel would have a greater mass
as it is more dense
,11. Hardness - Correct Answer: -Refers to various properties of matter in the solid phase
that give it a high resistance to its shape changing when force is applied
-Hard matter is contrasted with soft matter
-However, the behavior of solid materials under force is complex, resulting in several
different scientific definitions of what might be called hardness in everyday usage
-Three principal operational definitions of hardness: scratch hardness, indentation
hardness, and rebound hardness
12. Scratch hardness - Correct Answer: Resistance to fracture or plastic (permanent)
deformation due to friction from a sharp object
13. Indentation hardness - Correct Answer: Resistance to plastic (permanent)
deformation due to a constant load from a sharp object
14. Rebound hardness - Correct Answer: Height of the bounce of an object dropped o
the material, related to elasticity
15. Mohs' scale of hardness - Correct Answer: -Rates minerals and puts them on a scale
from 1 to 10 (1 is the softest and 10 is the hardest) determined by the ability of a harder
mineral to scratch a softer mineral
-Talc is at 1 and diamond is at 10
16. Physical properties - Correct Answer: -The characteristics that makes up the physical
composition of a substance
-Include color, form, electrical conductivity, and density
17. Physical changes - Correct Answer: -Involve one substance changing states (not one
substance changing into another)
-Typically reversible
, Example: water
-Can change from a gas (water vapor) to a liquid (water) to a solid (ice), but the water
molecules do not change
-The particular state of water is determined by pressure and temperature
-The dashed lines show the behavior of water at one atmosphere (sea level), freezing at
0°C (32°F), and boiling at 100°C (212°F)
-At other pressures, the freezing and boiling temperatures for water differ from the
familiar values
18. Chemical changes - Correct Answer: -A change of one substance into a different
substance
-Occurs whenever compounds are formed or decomposed
-During this reaction, there is a rearrangement of atoms that makes or breaks chemical
bonds
-This change is usually not reversible, unlike physical changes
Example: The formation of rust
-Iron chemically reacts with air and water to form rust (ferrous oxide) and is unable to
change back to iron
19. Chemical reactions - Correct Answer: Show the number of molecules or formula
units of the reactants and products
Example: nitrous oxide is a colorless, odorless gas that causes mild hysteria when
inhaled, hence the name laughing gas; it is prepared by heating ammonium nitrate
crystals
20. Atoms - Correct Answer: -Made up of several tiny parts
-At the center of an atom is a core called the nucleus
-The nucleus is made up of particles called protons and neutrons
-Protons have a positive electrical charge, and neutrons have no charge
-Electrons move around the nucleus in electron clouds
-Electrons have a negative charge, and they are attracted to the positively charged
protons in the nucleus
