Physical and Chemical Changes A Write On Activity.

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Presentation transcript:

Physical and Chemical Changes A Write On Activity

Objective: Chemical/Physical Change: Differentiate  The learner will be able to distinguish between a physical and chemical change.

Examples of signs that are both Chemical & physical  Gas production (can be a phase change or a new substance)  Color change (can hold in a color like a mixture or it could be a new substance)  Heat given off (simply hotter or could be burning to give off heat)  Smell (can be expanding out or brand new from a new substance)

Both of these examples are making a gas. Which one is physical and which is chemical? H 2 O in a liquid going into H 2 O as a gas is a PHYSICAL Change because it still H 2 O Two different chemicals are being added to create a new gas or bubbles. Like Baking Soda & Vinegar making bubbles is a CHEMICAL change

Both of these pictures show a color change due to heat: which is physical and which is chemical?  Paper burning is a chemical change because it is no longer paper, but becomes ash  When metals (such as steel) heat up they glow but they are still the same substance (still steal)

1. Is it a chemical or physical change?  Sugar dissolving in tea Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Physical Change

2. Is it a chemical or physical change?  Logs burning Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Chemical Change

3.Is it a chemical or physical change?  Melting an ice cube to become water. Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Physical Change

4.Is it a chemical or physical change?  Cutting paper Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Physical Change

5.Is it a chemical or physical change?  Crushing an aspirin Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Physical Change

6. Is it a chemical or physical change?  Metal rusting Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Chemical Change

7.Is it a chemical or physical change?  Lighter fluid burning Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Chemical Change

8.Is it a chemical or physical change?  An egg rotting Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Chemical Change

9. Is it a chemical or physical change?  An egg breaking Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct! Physical Change