Chapter 1: Lab Safety and Scientific Method

Front

What is the scientific method?

Back

A systematic process used by scientists to investigate phenomena, acquire new knowledge, or correct and integrate previous knowledge.

Front

Why do scientists use the scientific method?

Back

To ensure their results are valid and can be replicated by other scientists.

Front

What is a hypothesis?

Back

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

Front

True or False: A hypothesis can be proven wrong.

Back

True.

Front

What is the mean of a set of numbers?

Back

The average value, calculated by adding all numbers together and dividing by the count of numbers.

Front

How do you calculate the mean of 4, 2, 5, 6, 3?

Back

(4 + 2 + 5 + 6 + 3) / 5 = 4.

Front

What is lab safety?

Back

Practices and procedures that ensure the safety of individuals working in a laboratory.

Front

Name a common piece of lab equipment used to magnify small objects.

Back

Microscope.

Front

What is the purpose of a control in an experiment?

Back

To provide a standard for comparison against the experimental group.

Front

What is an independent variable?

Back

The variable that is changed or controlled in a scientific experiment.