Chemistry Fall 24 Final

Air is classified as matter because:

• It is a mixture of gases

• It has mass and occupies space

• It can be compressed

• It is invisible

Describe the main difference between inorganic chemistry and organic chemistry.

• Inorganic chemistry is the study of living organisms, while organic chemistry is the study of non-living matter.

• Inorganic chemistry and organic chemistry are the same fields of study.

• Inorganic chemistry deals with compounds that do not contain carbon-hydrogen bonds, while organic chemistry focuses on compounds with carbon-hydrogen bonds.

• Inorganic chemistry only studies metals, while organic chemistry only studies non-metals.

Is a scientist who is studying cancer with the goal of finding an effective treatment doing pure research or applied research?

• Applied research

• Pure research

What is the purpose of an experiment?

• To test a hypothesis

• To prove a theory

• To collect data

• To analyze results

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Which of the following is not involved in scientific methodology?

• hypothesis

• theory

• guess

• experiment

Tags

NGSS.MS-LS1-1

How do an independent variable and a dependent variable differ?

• There is no difference between an independent and a dependent variable.

• A dependent variable is manipulated to observe its effect on the independent variable.

• Both variables are manipulated simultaneously to observe their effects.

• An independent variable is manipulated to observe its effect on the dependent variable.

Tags

NGSS.MS-PS2-2

You perform an experiment and get unexpected results. According to scientific methodology, what should you do next?

• Change the hypothesis

• Publish the results

• Repeat the experiment

• Ignore the results

Explain how the results of many experiments can lead to both a theory and a scientific law.

• By disproving existing theories

• By documenting the failures of experiments

• By providing consistent evidence that supports a hypothesis

• By creating new experimental methods

Tags

NGSS.MS-PS1-2

Scientists are likely to collaborate for which of the following reasons?

• To work in isolation

• To avoid sharing knowledge

• To compete with each other

• To share resources and expertise

What is a mixture?

• A single element in its pure form

• A physical blend of two or more components

• A solution of a single component

• A chemical compound of two or more elements