Everything around us is made of matter.  Cars, rocks, people, and plants are all made of matter.  Matter makes up everything around us!

Things can be a solid, a liquid, or a gas.  Water can be frozen as ice, liquid as drinkable water, or heated as steam.  This is called state of matter.  The state means if it is a solid, a liquid, or a gas.

Ice is frozen water.  Heat ice and it becomes water.  This is called to melt.

Put water in a tray in the freezer.  It will turn into ice.  This is called to freeze.

Water can be heated.  It can turn into a gas, called steam.  Water turns into a gas when it gets hot enough to boil.  Boil is when water is so hot it makes bubbles and some water escapes as water vapor.  Water vapor is tiny droplets of water in the air.  It can be called steam.

A solid does not change its shape.  Ice is a solid.  A rock is a solid.

A liquid flows.  Water is a liquid.  Water flows.  Flow means is can change shape.  Milk is a liquid.

A gas can change shape.  We cannot see most gases.  A gas can fill up a balloon, a tire, or a bubble.

When water gets very cold it turns out to ice.  Liquids can turn to a solid.  This is called to be frozen when they get cold enough.  

A liquid can be heated.  It can boil.  When it boils it can give off water vapor.  This is called steam.