Big Idea 8 &9 Review Questions

Front

What is a solid?

Back

A solid is a state of matter that has a definite shape and volume. The particles in a solid are closely packed together and vibrate in place.

Front

What is the best evidence that a sample is a solid rather than a liquid?

Back

The shape of the sample provides the best evidence that it is a solid, as solids maintain their shape.

Front

What is a scientific investigation?

Back

A scientific investigation is a process used to answer questions or test hypotheses through observation and experimentation.

Front

What is the importance of evidence in scientific results?

Back

Scientific results must be based on evidence to be considered valid and reliable.

Front

What substance is most likely to dissolve in water?

Back

Salt is most likely to dissolve in water compared to substances like sand, flour, or pepper.

Front

What happens to chemical changes at lower temperatures?

Back

Chemical changes generally happen slower at lower temperatures.

Front

What is the definition of dissolving?

Back

Dissolving is the process where a substance (solute) mixes with a liquid (solvent) to form a solution.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

What is the role of a control in an experiment?

Back

A control is a standard for comparison in an experiment, helping to isolate the effects of the variable being tested.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.