Convert 3.75 × 102 mg to kg. Give your answer to the correct number of significant figures in standard notation.

Place the steps of the scientific method in a logical order.

Match each metric prefix with its meaning.

Match each laboratory instrument with the measurement it is best suited for.

Categorize each example using the best Chapter 1 concept.

Select all statements that correctly describe pure substances and mixtures.

Gold is melted, poured into a mold, and cooled until it becomes a solid gold bar. What type of change occurred?

Which statement best summarizes the Heisenberg uncertainty principle?

Which statements correctly describe the quantum model of the atom? Select all that apply.

Sulfur is in group 16. A neutral sulfur atom has valence electrons.