Matter and Reactions
5th Grade Science · 7 lessons
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Lessons
- 1Reactants and ProductsIn a chemical reaction, substances called reactants are transformed into new substances called products. The total mass stays the same because atoms are rearranged, not created or destroyed.Experiment
- 2Temperature and Particle MotionTemperature measures how fast particles are moving. At absolute zero, particles have the least possible energy. Heating matter increases particle motion and can cause state changes.Lesson
- 3Heat TransferThermal energy transfers from warmer objects to cooler ones through conduction (direct contact), convection (fluid movement), and radiation (electromagnetic waves).Lesson
- 4Metals and NonmetalsMetals are generally shiny, conduct heat and electricity, and can be bent without breaking. Nonmetals are often dull, poor conductors, and brittle in solid form.Lesson
- 5CrystallizationCrystallization occurs when a solution becomes supersaturated and dissolved particles form an orderly solid structure. Snowflakes, salt crystals, and rock candy form this way.Experiment
- 6Elements and CompoundsElements are pure substances made of only one type of atom. Compounds are substances made of two or more elements chemically bonded in fixed ratios.Lesson
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