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Physical vs Chemical

Review for Physical and Chemical Changes

QuestionAnswer
Type of Change: cut your hair Physical
Type of Change: baking soda and vinegar mixed together Chemical
Type of Change: a piece of metal is bent in half Physical
Type of Change: baking cookies Chemical
Type of Change: diamond used to scratch glass Physical
Type of Change: a crumpled piece of paper Physical
Type of Change: a tree burnt to ashes Chemical
Type of Change: water freezes to form ice Physical
Type of Change: apple rotting Chemical
Type of Change: roasting a marshmallow Chemical
A ______________ has a definite shape. It does not take the shape of it's container. It also has a definite volume because it can be measured. solid
A ______________ does not have a definite shape. It takes the shape of it's container. It does have a definite volume because it can be measured. liquid
A ______________ does not have a definite shape. It sometimes takes the shape of it's container and sometimes flies freely around. gas
What is volume? the amount of space that matter takes up
What is mass? the amount of matter an object has
What is a physical change? when object or substance changes only it's physical properties
What are some examples physical properties that can change? color, shape, size, temperature, or weight
What is a chemical change? when an object is changed into something completely different
What are signs that a chemical change has happened? new substance made, impossible to reverse, gas released, heat or light given off
What is freezing? when you change a liquid to a solid
What is melting? when you change a solid to a liquid
Created by: stillman