Home > Subjects > Chemistry > Level 1 > 1.3 Chemical reactions > Key tips
- Subject: Chemistry
- AS: AS90171
- Level: 1
- Credits: 4
- External
Chemistry 1.3 Describe chemical reactions
Key tips
- Understand the difference between a word equation and an equation involving formulae.
- If an equation needs balancing, you must balance the charge as well as the atoms.
- Learn your symbols of elements and formulae of ionic compounds. Know how to write formulae correctly.
- Show all working of your calculations.
- Do NOT use running arithmetic.
- Use correct units in your answers with rounding to an appropriate number of significant figures.
