IPC Review Game

What is the definition of a scientific hypothesis?

• A scientific hypothesis is a proposed explanation for a phenomenon, based on limited evidence as a starting point for further investigation.

• A scientific hypothesis is a detailed description of an experiment's procedure.

• A scientific hypothesis is a final proven theory.

• A scientific hypothesis is a random guess without any basis.

Name one piece of safety equipment you should use during a laboratory investigation.

• Goggles

• Notebook

• Calculator

• Pen

A scientific theory is different from a scientific law in that it:

• is a well-substantiated explanation acquired through the scientific method and repeatedly tested and confirmed through observation and experimentation.

• is a statement based on repeated experimental observations that describes some aspects of the universe.

• is a hypothesis that has not yet been tested.

• is a guess or assumption without evidence.

The purpose of using data-collecting probes in investigations is to:

• measure and record data accurately

• provide entertainment

• confuse the investigator

• replace human researchers

The scientific method can be applied in a comparative investigation by:

• Formulating a hypothesis and testing it through controlled experiments

• Comparing different variables without any hypothesis

• Ignoring the results and focusing on the process

• Using intuition to draw conclusions

What are physical properties of a substance?

• Color, density, volume, mass, boiling point, and melting point

• Ability to burn, reactivity with acid, and ability to rust

• Color, ability to burn, and reactivity with acid

• Volume, mass, and ability to rust

How can you determine if a chemical reaction has taken place?

• By observing a change in color

• By measuring the temperature change

• By checking for the formation of a precipitate

• All of the above

Which of the following is an example of how the physical properties of a substance relate to its everyday use?

• The hardness of diamond makes it suitable for cutting tools.

• The color of copper makes it ideal for electrical wiring.

• The taste of sugar makes it suitable for building materials.

• The transparency of glass makes it unsuitable for windows.

What changes occur in properties during oxidation reactions?

• Increase in mass

• Decrease in mass

• Change in color

• No change in properties

Which of the following describes the process of neutralizing an acid with a base and the observable changes?

• The acid and base react to form water and a salt, and the solution becomes neutral.

• The acid evaporates leaving the base behind, and the solution becomes acidic.

• The base dissolves completely in the acid, and the solution becomes basic.

• The acid and base form a gas, and the solution remains unchanged.