PHYSICAL SCIENCE ASVAB EXAM QUESTIONS

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PHYSICAL SCIENCE ASVAB EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -68 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: Chemistry

Answer:

is a physical science that investigates the composition , structure , and properties of matter . Chemistry is also concerned with changes in matter and the energy involved during those changes.

Question 2: More potent(powerful) bases include ?

Answer:

Sodium hydroxide (lye) and bleach

Question 3: Matter

Answer:

• is defined as anything that occupies space and mass.

Question 4: Solid carbon dioxide and solid iodine both have what property?

Answer:

Sublimation where solids vaporize directly without passing through the liquid stage

Question 5: Bases react with acids to neutralize each other and form?

Answer:

Bases reacts with acids to neutralize each other and form a salt and water

Question 6: 1 ml (cm^3) of water at 4 degrees Celsius is how many grams?

Answer:

• Gram

Question 7: Critical temperature

Answer:

the temperature at which a gaseous substance cannot return to the liquid phase.

Question 8: Freezing Point of water (Kelvin Scale)

Answer:

273 degrees

Question 9: Properties of bases

Answer:

• Bases can conduct electricity in a water solution. The degree of conduction depends on the ionization

of a base- it's number of charged particles.

• Bases react with acids to neutralize each other and form a salt and water.

• They react with fats to form soaps

• They cause litmus paper to change from red to Blue. ( this is a test for the presence of a base).

Question 10: Distillation

Answer:

• the action of purifying a liquid by a process of heating and cooling.
• the method of obtaining pure water in the laboratory. For example - water is heated ( causing it to

evaporate) and them cooled ( causing it to condense)

Question 11: The formula for calcium hydroxide

Answer:

CaO + H2O -->Ca(OH)2

Question 12: Condensation

Answer:

• when gas molecules return to liquid stage.
• is the change of the physical state of matter from gas phase into liquid phase

Question 13: When acids and bases react ( and they react together very powerfully) , the substances neutralize each other and turn into?

Answer:

Water and salt

Question 14: Non metal oxides react with water to form ?

Answer:

acids

Question 15: Some common basic substances found in the kitchen include ?

Answer:

Baking soda and soap

Question 16: Evaporation

Answer:

• when liquid molecules escape into the gaseous stage.

-is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance.Question 17: When these opposite changes take place at the same rate , we have what is called ?

Answer:

Equilibrium

Question 18: Physical science

Answer:

scientist would know very little about out solar system without an understanding of physics and chemistry , collectively know as physical sciences.

Question 19: Solid

Answer:

-has both definite a size and shape ( for example, an ice cube before it melts) -Particles at the solid stage have the most fixed positions and maintain a collective shape

Question 20: Acids react with carbonates to release ?

Answer:

Acids react with carbonates to release carbon dioxide.

Question 21: Acids react with bases to neutralize each other and form?

Answer:

Acids react with bases to neutralize each other and form a salt and water

Question 22: Acids are corrosive? What does this mean

Answer:

A corrosive substance is one that will destroy and damage other substances with which it comes into contact. It may attack a great variety of materials, including metals and various organic compounds, but people are mostly concerned with its effects on living tissue.tending to cause corrosion.

synonyms: caustic, corroding, erosive, abrasive, burning, stinging;

Question 23: What does some acids that react with some metals liberate ?

Answer:

Some acids react with some metals and liberate hydrogen

Question 24: How does liquid react with a temperature change?

Answer:

a liquid expands (grows larger in volume ) and contracts (grows smaller volume) very slightly with a temperature change.

Question 25: What color does litmus paper turn when detecting a base ?

Answer:

Litmus paper will turn blue when detecting a base. Bases cause litmus paper to change from red to blue , this is a test for the presence of a base.Question 26: What happens if a particular molecule gains enough kinetic energy near the surface of liquid?

Answer:

If a particular molecule gains enough kinetic energy near the surface of liquid, it can overcome the attraction of other molecules in the liquid and escape into a gaseous state. When this occurs the average temperature of the remaining molecules become lower than before the escape.