CSET Subtest II – Certification Exam with 250 Questions and
Correct Answers | Latest 2025/2026 Edition – Full Practice and
Prep Guide
1. A sealed container holds 50 g of ice. After the ice melts completely, what is the mass of the liquid water?
100 g
50 g
25 g
75 g
Real human photograph: Felix Nartey. Credit: Ruby Mizrahi / Wikimedia Foundation, CC BY-SA 3.0.
2. Which subatomic particle has a negative electric charge?
Electron
Proton
Nucleus
Neutron
Simple series circuit
battery
bulb
3. Which change is a chemical change?
Melting ice
Dissolving sugar
Crushing a can
Rusting iron
CSET Multiple Subjects Subtest II — Original exam-style practice Page 1
, Wave properties
amplitude
wavelength
4. A metal cube has a mass of 54 g and a volume of 6 cm³. What is its density?
9 g/cm³
0.11 g/cm³
324 g/cm³
48 g/cm³
CSET Multiple Subjects Subtest II — Original exam-style practice Page 2
, 5. Which statement best describes a compound?
It contains only one type of atom.
It can always be separated by filtration.
It contains two or more elements chemically bonded.
Its components retain all their original properties.
6. A solution with a pH of 3 is best described as:
Strongly basic
Slightly basic
Strongly acidic
Neutral
7. Which method is most appropriate for separating sand from water?
Chromatography
Evaporation only
Magnetism
Filtration
8. Which element is most likely to have properties similar to sodium?
Oxygen
Neon
Chlorine
Potassium
9. When water vapor changes directly into ice, the process is called:
Condensation
Deposition
Evaporation
Sublimation
10. Which observation provides the strongest evidence that a chemical reaction occurred?
Water freezes.
A gas forms when two substances are mixed.
A solid is cut into smaller pieces.
A liquid is poured into a larger container.
11. Which property is most useful for identifying a substance regardless of sample size?
Density
Volume
Mass
Weight
CSET Multiple Subjects Subtest II — Original exam-style practice Page 3
, 12. When a substance changes from liquid to gas, its particles generally:
become chemically different
change into a new element
move farther apart and faster
lose all kinetic energy
13. Which is a mixture?
Oxygen gas
Distilled water
Air
Sodium chloride
14. What happens to the temperature of a pure substance while it melts at its melting point under constant
pressure?
It falls continuously.
It becomes zero.
It remains essentially constant until melting is complete.
It rises continuously.
15. Which particle is found in the nucleus and has approximately the same mass as a proton?
Electron
Photon
Neutron
Ion
16. A negatively charged ion forms when an atom:
gains one or more electrons
loses all electrons
gains neutrons
loses protons
17. Which statement about conservation of matter is correct during an ordinary chemical reaction?
Mass always doubles.
Atoms are destroyed.
New elements appear from nothing.
The total number of atoms of each element is conserved.
18. Which form of energy is stored in the bonds of molecules?
Gravitational energy
Sound energy
Nuclear energy only
Chemical energy
CSET Multiple Subjects Subtest II — Original exam-style practice Page 4
Correct Answers | Latest 2025/2026 Edition – Full Practice and
Prep Guide
1. A sealed container holds 50 g of ice. After the ice melts completely, what is the mass of the liquid water?
100 g
50 g
25 g
75 g
Real human photograph: Felix Nartey. Credit: Ruby Mizrahi / Wikimedia Foundation, CC BY-SA 3.0.
2. Which subatomic particle has a negative electric charge?
Electron
Proton
Nucleus
Neutron
Simple series circuit
battery
bulb
3. Which change is a chemical change?
Melting ice
Dissolving sugar
Crushing a can
Rusting iron
CSET Multiple Subjects Subtest II — Original exam-style practice Page 1
, Wave properties
amplitude
wavelength
4. A metal cube has a mass of 54 g and a volume of 6 cm³. What is its density?
9 g/cm³
0.11 g/cm³
324 g/cm³
48 g/cm³
CSET Multiple Subjects Subtest II — Original exam-style practice Page 2
, 5. Which statement best describes a compound?
It contains only one type of atom.
It can always be separated by filtration.
It contains two or more elements chemically bonded.
Its components retain all their original properties.
6. A solution with a pH of 3 is best described as:
Strongly basic
Slightly basic
Strongly acidic
Neutral
7. Which method is most appropriate for separating sand from water?
Chromatography
Evaporation only
Magnetism
Filtration
8. Which element is most likely to have properties similar to sodium?
Oxygen
Neon
Chlorine
Potassium
9. When water vapor changes directly into ice, the process is called:
Condensation
Deposition
Evaporation
Sublimation
10. Which observation provides the strongest evidence that a chemical reaction occurred?
Water freezes.
A gas forms when two substances are mixed.
A solid is cut into smaller pieces.
A liquid is poured into a larger container.
11. Which property is most useful for identifying a substance regardless of sample size?
Density
Volume
Mass
Weight
CSET Multiple Subjects Subtest II — Original exam-style practice Page 3
, 12. When a substance changes from liquid to gas, its particles generally:
become chemically different
change into a new element
move farther apart and faster
lose all kinetic energy
13. Which is a mixture?
Oxygen gas
Distilled water
Air
Sodium chloride
14. What happens to the temperature of a pure substance while it melts at its melting point under constant
pressure?
It falls continuously.
It becomes zero.
It remains essentially constant until melting is complete.
It rises continuously.
15. Which particle is found in the nucleus and has approximately the same mass as a proton?
Electron
Photon
Neutron
Ion
16. A negatively charged ion forms when an atom:
gains one or more electrons
loses all electrons
gains neutrons
loses protons
17. Which statement about conservation of matter is correct during an ordinary chemical reaction?
Mass always doubles.
Atoms are destroyed.
New elements appear from nothing.
The total number of atoms of each element is conserved.
18. Which form of energy is stored in the bonds of molecules?
Gravitational energy
Sound energy
Nuclear energy only
Chemical energy
CSET Multiple Subjects Subtest II — Original exam-style practice Page 4
