Biology Chapter 1-2 Test

Front

What are the two main types of chemical bonds?

Back

Ionic and Covalent.

Front

What best describes a scientific law?

Back

A statement based on repeated experimental observations.

Front

What is a qualitative observation?

Back

It involves descriptions without numbers.

Front

How are scientific theories different from everyday theories?

Back

They are based on empirical evidence and rigorous testing.

Front

What is the main purpose of a hypothesis in scientific research?

Back

To provide a testable explanation for a phenomenon.

Front

Define Ionic Bond.

Back

A chemical bond formed by the transfer of electrons from one atom to another.

Front

Define Covalent Bond.

Back

A chemical bond formed by the sharing of electrons between atoms.

Front

What is a hypothesis?

Back

A testable prediction about the relationship between variables.

Front

What is the difference between a hypothesis and a theory?

Back

A hypothesis is a testable prediction; a theory is a well-substantiated explanation.

Front

What is empirical evidence?

Back

Information acquired by observation or experimentation.