Chemistry Midterm Review

Front

What is the variable the scientist wants to measure or observe in an experiment?

Back

The variable the scientist wants to measure or observe is the # of seeds germinated.

Front

Convert 6 kg to grams.

Back

6 kg = 6000 g.

Front

Round 0.000328 to 1 significant figure.

Back

0.0003.

Front

What guideline is violated in the following orbital diagrams: Hund’s rule or the Pauli exclusion principle?

Back

The guideline violated is the Pauli exclusion principle.

Front

True or False: Elements that are known as metalloids share the same characteristics as both metals and nonmetals.

Back

True.

Front

Define metalloids.

Back

Metalloids are elements that have properties of both metals and nonmetals.

Front

What is the significance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement.

Front

Explain Hund's rule.

Back

Hund's rule states that electrons will occupy degenerate orbitals singly before pairing up.

Front

What is the Pauli exclusion principle?

Back

The Pauli exclusion principle states that no two electrons can have the same set of four quantum numbers.

Front

How do you convert kilograms to grams?

Back

Multiply the number of kilograms by 1000.