Keywords: Hydrated salts – Water molecules – Heating – Chemical formula

Keywords: Spine – Vertebrae – Support – Protection – Spinal cord

Keywords: Galvanic cell – Cell voltage – Electrodes – Electrons – Voltage

Keywords: Circular motion – Path – Angular velocity – Centripetal force

Keywords: Old truck – Rust – Corrosion – Torque – Forces – Equilibrium

Keywords: Lemon battery – Chemical reaction – Electrodes – Voltage – Electricity

Keywords: Large intestine – Water absorption – Waste excretion – Beneficial bacteria

Keywords: Yeast – Temperature – Growth – Fermentation – Biological activity

Investigation of the process of electrolysis of waterelectrolysis of water – oxygen – hydrogen – electric current

Keywords: Pure water – Neutral – pH 7 – Indicators – Acids and bases

Keywords: Atmospheric pressure – Altitude – Barometer – Air – Air density

Keywords: Magnetic force – Magnet – Poles – Attraction – Repulsion

Keywords: Thermal expansion – Heat – Length increase – Liquids – Gases

Keywords: Thermal contraction – Cooling – Materials – Practical applications

Keywords: Displacement reaction – Iron – Copper sulfate – Copper precipitation – Chemical change

Comparison of different types of blotting papersKeywords (English): paper towel – absorption – water – comparison – porous materials

Volcano eruptionvolcanic eruption – magma – lava – pressure

Keywords: Thermal expansion – Heat – Length increase – Liquids – Gases

How to detect proteinsKeywords (English): protein detection – Biuret test – biological molecules – food testing

Keywords: Homogeneous mixtures – Heterogeneous mixtures – Solutions – Suspensions – Colloids

Keywords: Strong structure – Supports – Balance – Forces – Stability

Investigation of factors affecting solubilitysolubility – temperature effect – stirring – surface area – type of solute – dissolving rate

Keywords: DNA replication – Chromosomes – Genetic code – Replication enzymes

Keywords: Earth’s interior – Crust – Mantle – Core – Plates