2 What is Matter? Matter is anything that takes up space and has weight. Matter has three forms.Matter can be a solid, a liquid, or a gas.Matter is made up of tiny particles called molecules.
3 What do we know about solids? Solids take up space and have mass.Solids have a shape of their own.Solids can be described by their physical properties.Solids can be measured.
4 What do we know about liquids? Liquids take up space and have mass.Liquids do not have a shape of their own.Liquids take the shape of their container.Liquids can be measured (mass and volume).
5 What do we know about gases? A gas takes up space and has mass.A gas takes the shape of its container.A gas is the only kind of matter that always fills all the space inside a container.The mass of a gas can be measured.
6 Physical Changes in Matter CuttingMixingShapingChanging from one state of matter to another.MeltingFreezingEvaporating
7 Other changes in matter Some changes in matter are reversible.Some changes in matter are irreversible.Rusting, burning, and cooking are irreversible changes.
8 Wonderful Water Water can be a solid, a liquid, or a gas. Water as a solid may be ice or snow.Water as a liquid may be drinking water.Water as a gas is water vapor.Heat changes water from one form to another.Water in all three states make up the water cycle.