Tell at least 3 things in the photograph that could be easily changed.

“What is this stuff?”

Matter is anything that has mass and takes up space!

 A measure of how much matter is in an object.

 There are different “states” of matter. No, not like Texas, Oklahoma, New Mexico. States of matter are also known as phases (a physical state of matter). Elements and compounds can move from one phase to another phase when special physical forces are present.  Solid  Liquid  Gas

Example: People can be identified by their … Face ( shape, expressions ) VoiceHeightFinger prints Eye colorHair colorTeethDNA

 Matter has observable and measurable qualities.  We can use general properties to identify substances.  Two basic types of properties of matter: Physical properties and Chemical properties:

 Physical properties are used to identify, describe and classify matter. Characteristic of a substance that can be observed (using your senses) without changing the substance into something else. State of Matter TextureColor WeightMassTemperature

 Breaking it  Moving it  Melting it  Heating it  Mixing it

 Chemical properties are characteristics involved when a substance interacts with another substance to change its chemical make-up. FlammabilityRusting (oxidation) Creating gas bubbles Creating a new chemical product Reactivity with water pH

 Burning something  (combustibility: ability to burn)  Making it react to some other substance (water)  Making it rust  CANNOT be reversed  Cooking something

more practice

 1) Use the tree map to classify physical and chemical changes. Give 3 examples of each.

 According to the law of conservation of matter, the weight of a substance remains constant whether it is whole, separated into pieces, or in a different state.

 When an object or substance goes through a physical change, the weight of the object or substance stays the same. This is because matter can neither be created nor destroyed by physical or chemical changes. It can only change forms.  For example, if 5 ounces of pure ice melts into liquid water, the liquid will also have a weight of 5 ounces.

 If the 5 ounces of liquid were allowed to boil in a pan until there was nothing left in the pan, what would be the weight of the steam created?

 5 ounces!

 If the mass of a pencil is 37 grams is broken into pieces, what is the total weight of the 5 pieces?

 37 grams

 All of the pieces added together equals _________.