Matter Practice Questions
K-12 (Philippines) · K-12 Science · 146 free MCQs with instant results and detailed explanations.
146
Total
37
Easy
77
Medium
32
Hard
Start Practicing Matter
Take a timed quiz or customize your practice session
Sample Questions from Matter
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following is an example of a solid?
A.
Ice
B.
Water
C.
Steam
D.
Air
Show Answer & Explanation
Correct Answer: A
Ice is a solid because it has a definite shape and volume, unlike liquids and gases.
Q2
Easy
What happens to the volume of a gas when it is heated while keeping the pressure constant?
A.
It decreases
B.
It increases
C.
It remains the same
D.
It becomes a liquid
Show Answer & Explanation
Correct Answer: B
According to Charles's Law, the volume of a gas increases with an increase in temperature at constant pressure.
Q3
Easy
Which of the following processes is an example of a physical change?
A.
Burning wood
B.
Melting ice
C.
Rusting iron
D.
Cooking an egg
Show Answer & Explanation
Correct Answer: B
Melting ice is a physical change because it alters the state of the water without changing its chemical composition.
Q4
Medium
What is the primary reason that ice floats on water?
A.
Ice is denser than water.
B.
Ice is less dense than water.
C.
Ice has a higher temperature than water.
D.
Ice has more mass than water.
Show Answer & Explanation
Correct Answer: B
Ice floats on water because it is less dense than liquid water. The molecular structure of ice forms a lattice that takes up more space, resulting in lower density.
Q5
Medium
When a solid is heated, what typically happens to its particles?
A.
They move closer together.
B.
They vibrate faster and spread apart.
C.
They become liquid.
D.
They stop moving.
Show Answer & Explanation
Correct Answer: B
When a solid is heated, its particles gain energy, causing them to vibrate faster. This increased energy may lead to the particles moving apart, especially as the solid approaches its melting point.
Q6
Medium
Which of the following best describes a chemical change?
A.
Melting of ice.
B.
Dissolving sugar in water.
C.
Burning wood.
D.
Freezing water.
Show Answer & Explanation
Correct Answer: C
Burning wood is a chemical change because it transforms the wood into new substances such as ash, carbon dioxide, and water vapor, while the other options involve physical changes.
Q7
Medium
Which method would be most effective in separating a mixture of sand and salt?
A.
Filtration
B.
Evaporation
C.
Distillation
D.
Dissolving in water and filtering
Show Answer & Explanation
Correct Answer: D
Dissolving the mixture in water allows the salt to dissolve while the sand remains undissolved. After filtering, the sand can be separated, leaving the salt in the solution, which can be further recovered through evaporation.
Q8
Hard
Which of the following statements best describes the change in volume of a gas when its temperature is increased at constant pressure?
A.
The volume decreases because gas molecules move closer together.
B.
The volume increases because gas molecules move farther apart.
C.
The volume remains the same because the gas is contained.
D.
The volume decreases because gas molecules lose energy.
Show Answer & Explanation
Correct Answer: B
According to Charles's Law, the volume of a gas increases as the temperature increases at constant pressure. This is due to increased kinetic energy causing gas molecules to move farther apart.
Q9
Hard
A 20g sample of a solid has a volume of 10 cm³. What is the density of the solid, and how would this information be useful in identifying the material?
A.
2 g/cm³; it indicates how heavy the material is regardless of its size.
B.
1 g/cm³; it suggests the material is likely a metal.
C.
0.5 g/cm³; it suggests the material is a gas.
D.
2 g/cm³; it can be compared with known densities to identify the material.
Show Answer & Explanation
Correct Answer: D
Density is calculated by dividing mass by volume. Here, density = 20g / 10cm³ = 2 g/cm³. This value can be compared with known densities to help identify the material.
Q10
Hard
Which of the following statements correctly describes the behavior of gases compared to liquids and solids?
A.
Gases have a definite shape and volume.
B.
Gases expand to fill their container and have low density.
C.
Gases can be compressed but liquids cannot.
D.
Gases have stronger intermolecular forces than solids.
Show Answer & Explanation
Correct Answer: B
Gases expand to fill their container due to high kinetic energy of particles and have low density compared to liquids and solids because their particles are far apart.
Showing 10 of 146 questions. Start a quiz to practice all questions with scoring and timer.
Practice All 146 Questions →Other K-12 (Philippines) Subjects
Matter — K-12 (Philippines) K-12 Science Practice Questions Online
This page contains 146 practice MCQs for the chapter Matter in K-12 (Philippines) K-12 Science. The questions are organized by difficulty — 37 easy, 77 medium, 32 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.