Changes in Matter Types of Changes Two Types
- Slides: 11
Changes in Matter
Types of Changes: Two Types of Changes Physical Change Chemical Change
Physical Change: ¡ ¡ Does not change the chemical composition or the nature of a substance Process is easily reversible Ex. l Crumpling & smoothing out paper Freezing water and thawing ice Sublimation – from solid to gas (ex. dry ice (CO 2) or iodine)
Tells you a physical change occurred ¡ Key Words: l Crush/Pulverize l Melt l Evaporation l Condensation l Sublimation l Solidification l Dissolve
Chemical Changes: ¡ ¡ ¡ Changes the chemical composition or make-up of the substance New substances are formed with new properties Not easily reversible (Reversible only through chemical means or reactions) Rust
Signs of Chemical Changes: ¡ Formation of a gas ¡ Formation of a precipitate ¡ Change in color ¡ Production of heat &/or light ¡ Increase or decrease in mass Tells you a chemical change occurred
Physical Change -Sublimation -Freezing -Condensation -Evaporation -Pulverization (crush) -Solidification -Dissolving Chemical Change - Burning - Neutralization - Combustion - Corrosion (rusting)
Which of the following are examples of physical changes? 1. Melting Butter 2. 3. 4. Rusted Car Dissolving Sugar 6. in Tea Crushing Rock 5. Condensation Burning Wood
Which of the following are examples of chemical changes? 1. Cooking an egg 2. 3. 4. Rotting food Sublimation of Dry Ice Freezing Rain 5. 6. Burning a candle Crumpling Paper
Where You carry didout a chemical the following steps of an change occur? experiment A physical & record your observations. change? 1. You place a powder in a test tube 2. You heat the test tube. You notice that a colorless gas & a coppercolored liquid are produced. 3. You collect the copper-colored liquid & cool it. It becomes a solid.
Activities: ¡ Physical ¡ Student 1 -16 Science Worksheet #2 Study Guide – Mod 1 -14 -
- What are the two types of change in matter
- Two types of matter
- Changes in latitudes, changes in attitudes meaning
- Physical and chemical change examples
- Properties and changes of matter worksheet
- Physical changes in matter
- Phases changes of matter
- Definition of substance
- Matter-properties and changes answer key
- Change in state of matter
- Which is a big idea for matter and change
- Eating food physical or chemical change