Class Procedures

In lab you must always wear the proper ___________________.

• uniform

• safety equipment

• earrings

• fanny pack

In lab you must always wear the proper ___________________.

• uniform

• safety equipment

• earrings

• fanny pack

Which of the following is a key step in the scientific method?

• Guessing the outcome

• Ignoring data

• Formulating a hypothesis

• Skipping experiments

What is the primary purpose of a control group in an experiment?

• To provide a standard for comparison

• To increase the sample size

• To ensure the experiment is valid

• To confuse the results

When conducting an experiment, why is it important to repeat trials?

• To waste time

• To ensure accuracy and reliability

• To make the experiment more complex

• To impress others

Tags

NGSS.MS-ETS1-4

Which of the following is an example of a qualitative observation?

• The liquid is 50 mL

• The temperature is 100°C

• The solution is blue

• The mass is 20 grams

What is the role of a hypothesis in scientific research?

• To prove a theory

• To provide a testable explanation

• To summarize data

• To confuse researchers

Tags

NGSS.HS-LS1-6

In a chemical reaction, what does the law of conservation of mass state?

• Mass is created

• Mass is destroyed

• Mass is conserved

• Mass is irrelevant

Tags

NGSS.MS-PS1-5

Which of the following is a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Cooking an egg

What is the main function of chlorophyll in plants?

• To absorb water

• To absorb sunlight

• To absorb nutrients

• To absorb carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3