February 2019 Credit Recovery Final Exam

Which of these chemicals is inorganic?

• one that is made of carbon and hydrogen

• one that is made of nitrogen and carbon

• one that is made of carbon and oxygen

• one that is made of nitrogen and hydrogen

A hypothesis is

• an observation recorded from an experiment.

• a proposed explanation for what is observed.

• a summary of the results of many experiments.

• a well-tested explanation for many observations.

Which of the following is NOT a part of the scientific method?

• experimenting

• observing

• proving

• hypothesizing

True or False: You generally experiment before forming a hypothesis.

• True

• False

True or False: You generally experiment before forming a hypothesis.

• True

• False

Variables that are kept constant in an experiment are called _______________________.

• independent variables

• dependent variables

• controlled variables

• none of the above

What state of matter has definite shape and definite volume?

• Solid

• Liquid

• Gas

• All of the above

If you were to draw a diagram of what a gas particles looked like how would you draw them?

• All of the particle packed closely together

• All of the particles with a little space between them

• All of the particles with lots of space between each particle

• None of the options.

The definition of a gas would be which of the following...

• They have definite shape and volume.

• They have definite shape but not a definite volume.

• They do not have a definite shape or volume.

• Gases do not have a definition.

What are the positively charged particles in an atom called?

• Electrons

• Neutrons

• Protons