Name:_________________________________________ Date:_____________________________________ Pd:______ Properties of Matter Matter is ANYTHING that has mass and takes up space. Examples:__________________________________________________________ • Mass vs. Weight (also see movie notes) • The mass of an object is _________________ the same no matter where it is located. • Weight is a measure of the amount of __________________________ exerted on an object. • We weigh ___________ on the moon than on earth because the moon experiences less gravity. Our mass is the _____________. • Chemistry is the study of the _______________________of matter and how matter changes. • A Physical Property is a characteristic of a substance that can be observed _________________ changing it into another substance. • • Examples: ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ ______________ A Physical Change is a change that _________________ one or more physical properties of a substance. • If I rip a piece of paper up- its still paper just a different shape • If I dye water green- its still water just water with green dye in it. How do I know if it’s a physical change? • When deciding whether a change is a physical change or not, ask yourself whether you have the same substance you started with. • If the substance is the same, then the changes it underwent were all physical changes. Name:_________________________________________ Date:_____________________________________ Pd:______ Density Density is the amount of _______________ in a given space. o Formula: Density = mass volume o The unit for density ____________or g/ml o Density is useful for identifying substances for two reasons: Density stays the same for any SIZE piece of something The density of one substance is usually different from that of another substance. Try it out: (show your work!) o A glass marble has a volume of 5 cm3 and a mass of 13 g. What is the density of glass? What do you know? Volume = _______, mass = __________ Write the formula: Substitute into the formula: Calculate: Check that your units agree: g/cm3? Answer: o A lead sinker has a mass of 227 g and a volume of 20 cm3. What is the density of lead? o A glass of milk has a volume of 100 cm3. If the milk has a mass of 103 g, what is the density of milk?