Midterm Science Quiz2

What is the first rule of the scientific method?

• Collect and Analyze Data

• Formulate a Hypothesis

• Make Observations

• State the Problem

What type of observation uses numerical values?

• Hypothesis

• Qualitative Observation

• Inferences

• Quantitative Observation

What is a hypothesis?

• A final conclusion

• An educated guess

• A type of observation

• A method of measurement

What does the independent variable represent in an experiment?

• The factor that changes

• The manipulated variable

• The measured outcome

• The constant factor

What is a control group?

• The group with all similar variables except the independent variable

• The group that is not tested

• The group that is manipulated

• The group with all variables changed

What is the definition of a molecule?

• A single atom

• Two or more atoms chemically combined

• A type of mixture

• A pure substance

Which state of matter has a definite shape and volume?

• Liquid

• Gas

• Solid

• Plasma

What is a characteristic of non-metals?

• Lustrous appearance

• Brittle and low density

• High melting point

• High conductivity

What is a solution?

• A heterogeneous mixture

• A pure substance

• A type of compound

• A homogeneous mixture

What does pH measure?

• The volume of a solution

• The temperature of a solution

• The density of a liquid

• How acidic or basic a liquid is