High School Chemistry · Unit 01 Practice
Intro to Chemistry & Lab Safety
Try 3 free problems on measurement, sig figs, unit conversions, and lab basics. Want more reps? Premium opens the full 215-problem bank in sets of 3, 9, or 18.
Want one skill at a time? Try the free significant figures practice problems with worked solutions.
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.
#4
Measurement
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?
#5
Lab Safety
When preparing a dilute acid solution, the correct procedure is to…
A. Add water to acid quickly
B. Add acid to water slowly, with stirring
C. Mix simultaneously from two containers
D. Heat the acid first, then add water
#6
Unit 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 memorizationFull worked solutions — see exactly where your setup went off track, not just whether you were right215 problems across significant figures, measurement, unit conversions, and lab safetyQuick (3), Standard (9), or Extended (18) — use whatever fits your scheduleFilter by type — focus on calculation, concept, or multi-step problems firstFilter by difficulty — dial in easy, medium, or hard problems as you build up
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High School Chemistry · Unit 01 · Intro to Chemistry & Lab Safety Practice