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Physical Science Major Quiz

Strengthen your understanding of matter, motion, and energy. Part of our LET Reviewer 2026 practice series.

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1.What term describes the collected measurements and observations used to support an explanation?

A.ConclusionB.DataC.GraphD.Variables

2.What is the proper method for validating a hypothesis?

A.By gathering enough information about the problemB.By making inferencesC.By conducting experimentD.By formulating conclusion

3.What describes a consistently observable natural phenomenon under identical conditions, often expressed mathematically or verbally?

A.ConclusionB.HypothesisC.LawD.Theory

4.When Ruben dissolves orange crystals in water with continuous stirring, which observations are most likely to occur? I. The water becomes orange. II. The color of the solution becomes darker. III. Crystals disappear from the bottom of the beaker. IV. The beaker and its contents become heavier as stirring continues.

A.I and II onlyB.III and IV onlyC.I, II, and III onlyD.I, II, and IV only

5.Which statement about the scientific method is FALSE?

A.Conclusion is the last stepB.Scientific method may be applied in everyday lifeC.Scientific method is a systematic way of solving problemD.Scientific method is done by following a step-by-step procedure in an exact sequence

6.Which laboratory equipment should be used to accurately determine the mass of an irregularly shaped solid?

A.Electronic balanceB.Erlenmeyer flaskC.Graduated cylinder with waterD.Vernier caliper

7.When graphing the relationship between distance traveled and velocity of a car, which variable is dependent and on which axis should it be plotted?

A.Distance, x-axisB.Distance, y-axisC.Velocity, x-axisD.Velocity, y-axis

8.A student discovers a piece of metal. What quick test can determine if the metal might contain iron?

A.Heat the metalB.Weigh the metalC.Place the metal in waterD.Place the metal near a magnet

9.A student submerged strips of aluminum and iron in water, then exposed them to air for one week. What was most likely observed after one week?

A.The iron strip formed rustB.The aluminum strip formed rustC.Both of the metal strips formed rustD.Neither of the metals formed rust

10.Which human activity has contributed the most carbon to the atmosphere?

A.Burning fossil fuelsB.Mining fossil fuelsC.Increasing soil erosionD.Cutting down the rainforests

11.The table below lists measurement tasks and tools. Which pair correctly matches the measurement task with appropriate laboratory tools? I. Add 10g of salt to 200 ml of water and stir - Triple-beam balance, 25 ml capacity beaker marked in 1 ml intervals II. Add 20 ml of rubbing alcohol to 50 ml of water - 250 ml capacity Erlenmeyer flask marked in 50 ml intervals III. Add 3 ml of cooking oil to 10g of sugar - 5 ml capacity pipette marked in 1 ml intervals, pan balance with masses, petri dish IV. Add 25 g sugar to 15 ml of water and heat until the sugar dissolves - 100 ml capacity graduated cylinder marked in 25 ml intervals, spring scale, mortar

A.IB.IIC.IIID.IV

12.Aubrey wants to monitor her summative test scores throughout the first grading period. Which graphical representation would best help her analyze her progress over time?

A.Bar graphB.Line graphC.Pie graphD.Scatter graph

13.What is the most likely consequence if global warming continues unaddressed?

A.Lower sea levelsB.Melting of ice capsC.More pollution in waterD.More reflected sunlight off the ice pack

14.What type of relationship exists when both quantities increase, but one quantity increases at a faster rate than the other?

A.Direct proportionB.Direct square proportionC.Inverse proportionD.Inverse square proportion

15.To determine which is denser, oil or water, you mixed 25 ml of oil with 25 ml of water. What useful qualitative observation can you make from this setup?

A.There are 50 ml of liquid in the containerB.Oil did not mix with waterC.Oil is on top of the waterD.There are 25 ml of water and 25 ml of oil in the container

16.Which of the following is classified as a compound?

A.Cemented wallB.Dry iceC.GoldD.Tincture of iodine

17.Which substance is most likely to turn blue litmus paper red?

A.Ammonia in waterB.Detergent solutionC.Lime waterD.Vinegar

18.Which can be classified as homogeneous mixtures? I. Buko pie II. Blood III. Virgin coconut oil IV. Mango juice

A.III onlyB.I and II onlyC.I, III, and IV onlyD.II, III and IV only

19.Which is a physical property characteristic of non-metals?

A.Malleability and ductilityB.Low tensile strengthC.High densityD.High tensile strength

20.The yellow color of a highlighter is a ________ property.

A.chemicalB.heterogeneousC.homogeneousD.physical

21.An odorless and colorless substance boils at 100°C and melts at 0°C. What conclusion can be drawn from these observations?

A.It is a metalB.It is a mixtureC.It is a non-metalD.It is a pure substance

22.Which substance would you use to clean tarnished silver?

A.Baking sodaB.Salt solutionC.Sugar solutionD.Vinegar

23.What would you add to food to extend its shelf life?

A.Baking sodaB.Salt solutionC.TomatoD.Vinegar

24.Why is it inadvisable to consume soft drinks on an empty stomach?

A.It could lessen your appetiteB.It could make you feel full fasterC.It increases the acidity of your stomachD.It contains stimulants which cause dizziness

25.Where is almost all of an atom's mass concentrated?

A.electronB.neutronC.nucleusD.proton

26.How many protons does an atom contain if it has a mass number of 23 and an atomic number of 11?

A.11B.12C.23D.44

27.A Carbon-12 atom contains ______________.

A.6 electrons, 6 protons, 6 neutronsB.6 electrons, 12 protons, 6 neutronsC.12 electrons, 6 protons, 6 neutronsD.16 electrons, 6 protons, 6 neutrons

28.What happens to an element's atomic number during a chemical reaction?

A.ChangesB.Remains the sameC.Changes alternatelyD.Changes and then is restored

29.Which statement about hydrogen isotopes is correct?

A.They have different atomic numbersB.They have the same number of protonsC.They have the same number of neutronsD.They have different numbers of electrons

30.Which of the following species has 16 electrons?

A.₁₃Al³⁺ with mass number 27B.₁₇Cl⁻ with mass number 35C.₁₆S with mass number 32D.₁₆S²⁻ with mass number 32

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