Grade 7 Integrated Science End Term 3 Exam With Answers

Integrated Science replaces the separate primary science subjects in junior school and lays the ground for chemistry, biology and physics in senior school. End-of-term papers are set by schools, so their formats differ; ours follows the Grade 9 KJSEA style, with a long multiple-choice section and a short section of calculations. Practising this layout from Grade 7 means the national paper holds no surprises two years later.

• Introduction to Integrated Science: laboratory safety, hazard symbols, apparatus, the Bunsen burner and SI units.
• Mixtures, elements and compounds: pure substances and mixtures, and separation by filtration, evaporation, magnets and chromatography; acids, bases and indicators, including plant extracts and the pH scale.
• Living things and their environment: plant and animal cells, using the light microscope and calculating magnification, diffusion and osmosis, classification of animals and plants, and the digestive system.
• Force and energy: electrical circuits and safety, cells in series, magnetism, heat transfer by conduction, convection and radiation, and gravity.

Many Grade 7 questions test whether a learner can apply an idea, not just recall it. “Raisins placed in water swell” is really a question about osmosis; “land and sea breezes” is about convection. When a question describes an everyday situation, ask: which science idea explains this? Then choose the option that names that idea.

For calculations, write the formula before the numbers. Total magnification = eyepiece × objective; actual size = image size ÷ magnification; volume by displacement = final reading − initial reading; density = mass ÷ volume. Our worked answers lay out each one in that order, so your child can copy the method into their notebook.

• Choosing “luminous flame” for heating. The blue non-luminous flame is hotter and clean.
• Mixing up diffusion (any particles) and osmosis (water through a membrane).
• Saying the nucleus is found only in animal cells. Both plant and animal cells have one; chloroplasts and cell walls are the plant-only parts.
• Thinking heat from the sun travels by convection. There are no particles in space, so it travels by radiation.
• Adding magnifications instead of multiplying them.

Every end-term science paper includes a few laboratory safety questions, and they are the easiest marks on the paper if your child has learnt the rules: rinse splashes with running water, never taste chemicals, tie back long hair near flames, and report accidents to the teacher at once. Learn the common hazard symbols (flammable, toxic, corrosive, harmful) by drawing them.

More Grade 7 exams are on the Grade 7 revision papers page. For quick daily practice, try the Grade 7 CBC Challenge, and read the Grade 7 guide for the full curriculum.