5th Grade Science

A fun and engaging exploration of physical and chemical changes, Earth's systems, and scientific reasoning for 5th grade students.

Physical ChangesChemical ChangesEarth's Systems
Mixtures and SolutionsWeather and ClimateScientific Reasoning
Observing Changes at HomeProtecting Earth's SystemsWeather Tracking
Using Diagrams and ChartsPractice with Real-Life Scenarios
Physical ChangesChemical ChangesEarth's SystemsMixtures and Solutio...Weather and ClimateScientific ReasoningObserving Changes at...Protecting Earth's S...Weather TrackingUsing Diagrams and C...Practice with Real-L...
Basic Concepts

Chemical Changes

Discovering Chemical Changes

Chemical changes create new substances with different properties. The molecules are rearranged, and you might see color changes, gas bubbles, or even heat and light being released.

Signs of Chemical Changes

  • Color change (like apple slices turning brown)
  • Formation of gas (bubbles when vinegar and baking soda mix)
  • Release of energy (light, heat, or sound)
  • Formation of a solid (precipitate)

Chemical Changes in Everyday Life

Chemical changes are everywhere! Cooking, rusting, burning, and even digesting food in your body involve chemical changes.

Can Chemical Changes Be Reversed?

Most chemical changes are not easily reversible. Once wood burns to ash, it can't turn back into wood!

Why Study Chemical Changes?

Knowing about chemical changes helps us cook safely, prevent rust, and even develop new materials.

Examples

  • Cooking an egg until it solidifies.

  • Iron nails rusting when left outside.

In a Nutshell

Chemical changes make new substances with different properties.

Key Terms

Chemical Change
A change that forms new substances with different properties.
Reaction
The process where substances interact to form new substances.
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Earth's Systems