Begin with 3 free Unit 01 practice problems. When you want more chances to steady measurement, sig figs, unit conversions, and lab basics, premium unlocks Quick Sets of 3, Standard Sets of 9, and Extended Sets of 18 from this 125-problem bank.
3 Free Sample Problems
Work these 3 to find out whether measurement, sig figs, and conversions are solid — or whether the foundation needs another pass before you move on.
#4Measurement
A graduated cylinder has 1 mL markings, and the bottom of the meniscus sits halfway between 18 mL and 19 mL. What volume should be recorded?
#5Lab Safety
When preparing a dilute acid solution, the correct procedure is to…
#6Unit Conversion
How many seconds are in exactly 5.00 years? (Use 365 days/year.) Express in scientific notation, e.g. 1.58e8.
Prep for the test — not just the homework
The 3 free problems show you where you stand. The full bank is how you close the gaps before the test.
Randomized every time — fresh problems that force real understanding, not answer memorization
Full worked solutions — see exactly where your setup went off track, not just whether you were right
125 problems across significant figures, measurement, unit conversions, and lab safety
Quick (3), Standard (9), or Extended (18) — use whatever fits your schedule
Filter by type — focus on calculation, concept, or multi-step problems first
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General Chemistry · Unit 01 · Intro to Chemistry & Lab Safety Practice