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S1 Science: Laboratory Safety and Apparatus (Paper 1 (basics))
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S1 Science: Laboratory Safety and Apparatus (Paper 1 (basics))
This paper drills the basics: what cylinders, balances and evaporating dishes are for, reading at eye level, and finding a temperature rise by subtraction.
Direct answers Ask first whether you are measuring volume, mass or temperature, then pick the apparatus and read at eye level.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: S1 Science: Laboratory Safety and Apparatus |
| Level | S1 |
02 Questions (10 items)
- FoundationWhich apparatus should be used to measure exactly 25.0 mL of liquid?
- FoundationWhere should your eye be when reading a measuring cylinder?
- FoundationWhat does a balance measure, and in what unit?
- IntermediateWater is heated from 25 °C to 40 °C. By how much does the temperature rise?
- IntermediateA 500 mL beaker is at hand and you need 40 mL of water. Which cylinder fits?
- IntermediateTwo samples weigh 12.5 g and 7.3 g on a balance. What is their total mass?
- ChallengeWhich apparatus is used to heat a little liquid until it evaporates to dryness?
- ChallengeA cylinder with 10 mL divisions is used for 200 mL with a 5 mL error. What is the percentage error?
- ChallengeYou need 360 mL but only a 250 mL cylinder is available. What should you do?
- Error redoA student looks down at the cylinder and says more water was measured than there really is. What is correct?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | A measuring cylinder with 1 mL divisions | A measuring cylinder is made for measuring a chosen volume; beaker marks are only rough. |
| 2 | Level with the bottom of the meniscus | Looking up reads too low and looking down reads too high; only a level eye is accurate. |
| 3 | Mass, in grams (g) | A balance measures mass, usually recorded in grams or kilograms. |
| 4 | 15 °C | The rise is 40 minus 25, that is 15 °C. |
| 5 | A 50 mL measuring cylinder | Choose a cylinder just larger than the volume needed, so a 50 mL cylinder is best. |
| 6 | 19.8 g | Adding 12.5 and 7.3 gives 19.8 g. |
| 7 | An evaporating dish | An evaporating dish is wide and heats evenly, so the solid can be collected. |
| 8 | 2.5% | Five divided by two hundred, times one hundred, is 2.5%. |
| 9 | Use a 500 mL measuring cylinder in one go | A 250 mL cylinder cannot hold 360 mL and measuring twice doubles the error, so change to a larger cylinder. |
| 10 | Looking down makes the reading too high, so the reading overstates the volume | The mistake is the direction: looking down raises the reading, so the water is less than the reading. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Three lab habits: read the scale before pouring, never point a heated tube at anyone, and always add acid to water; read a measuring cylinder at eye level on the bottom of the meniscus.Tutor Registration →
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.