Physical Science Fall 2024 Final

The octet rule states that atoms tend to gain, lose, or share electrons in order to have eight electrons in their valence shell, achieving a stable electron configuration.

Hydrogen typically does not follow the octet rule as it can only hold two electrons in its outer shell.

A measurement is accurate if it is close to the true value.

The scientific method is a systematic process used by scientists to test hypotheses through observation, experimentation, and analysis.

Scientists test a hypothesis by conducting experiments.

Speed is the distance traveled per unit of time, calculated as speed = distance/time.

Speed = 10.7 m / 26.8 s = 0.4 m/s.

Physical science is the study of matter and energy, and the relationship between them.

Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in the decimal part.

Accuracy refers to how close a measurement is to the true value, while precision refers to how consistent repeated measurements are.