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Does it really…….. MATTER????. What is matter?. Anything that has mass and takes up space. What isn’t matter?. What is matter made of???. Democritus- empty space and tiny bits of stuff…. called them atoms. What is the Law of Conservation of Mass????. - PowerPoint PPT Presentation
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What is the Law of Conservation of Mass????
Matter cannot be created or destroyed- it only changes forms
Who wrote that law?
Antoine Lavoisier- a French chemist http://www.youtube.com/watch?v=x9iZq3
ZxbO8
How do we know what an atom looks like?
We use models to help us understand
http://www.youtube.com/watch?v=xqNSQ3OQMGI
What is found in the nucleus?
Protons- positive Neutrons- neutral Facts-
P + N- atomic mass # of P= atomic number # of P= # of electrons
What is the difference in a physical change and a chemical change?
Physical change- a substance is not changed chemically
Chemical change- a new substance forms
http://www.youtube.com/watch?v=qqqmFFCwd7k
Is this a chemical change or physical change????
http://www.youtube.com/watch?v=uZlh89iL4jI&feature=related
Physical Properties of matter
Color *Temperature Shape Mass Length Volume Density http://
www.youtube.com/watch?v=QkAPTXr5vMs
Chemical Properties of Matter
Flammability Reacts with oxygen (oxidation) Reacts with light Reacts with water http://www.youtube.com/watch?
v=OgS46ksAawk http://
www.youtube.com/watch?v=uJOGy0dgmUU