[6] 8. Match the following substances with type os substances: Substance Sodium hydroxide Water Lemon juice Type of Substance Neutral Acid Alkali [3] 9. Write ‘True’ for the statements you consider as true and ‘False’ for the incorrect statement: (a) Universal Indicator changes colour and shows the pH of a substance ……..…………….. (b) A pH …
(a) The protons (b) The nucleus (c) The electrons 2. What is the charge on an electron? (a) One positive (b) No charge (c) One negative 3. Which of the three sub-atomic particles is the lightest? (a) The proton (b) The neutron (c) The electron 4. If atoms contain charged particles, why do they not …
1. Name a food that contains an acid.2. Describe the taste of lemons and limes.3. What does ‘corrosive’ mean?4. What should you do if you spill acid?5. How does an indicator show the difference between an acid and an alkali?6. What colour does red cabbage juice go when it is added to lemon juice?7. What …
This teacher never be exhausted. Always on the go. Always keeps smiling. If you ever give her Math classes for four periods in a row, she won’t give you any complain! Why? She loves teaching, loves mentoring, loves inspiring, loves sharing, loves kahooting! All she does are related to students’ fun acquisition of Math skills …