Matter Chapter 2

Matter has ___________ and takes up __________________. massspace (volume) What are some physical properties of matter that we can use to identify an object? Color Odor Mass Thermal conductivity: the ability to transfer thermal energy (heat) from one area to another State: the physical form (solid, liquid, or gas)

Solubility – the ability to dissolve in another substance Ductility: the ability to be pulled into a wire Malleability: the ability to be pounded into thin sheets

Density – the mass per unit volume D = __M__ V 9. a.The density of a particular substance is always ________________ at a given ____________________ and _____________________. the same temperaturepressure b. The density of one substance is usually ___________________ from the that of another substance. c. The size of the sample does _______ affect its density! different NOT Example: Which sample of gold is more dense? ________________________ The two samples have the SAME density!!!! V =__M__ D M = D x V

Density of liquids: ________________________ ________________________ ________________________ ________________________ In a mixture of liquids that do not dissolve in each other, the least dense liquid will float to the top.

Chemical Properties of Matter Chemical properties of matter describe a substance based on its ability to __________________________________________ with different properties. change into a new substance Examples of chemical properties: 1. Flammability - ___________________________ Nonflammability - _______________________ the ability to burn 2. Reactivity - _____________________________ _____________________________ When 2 substances get together, something happens. Examples: ____________ Rust _______________ Bubbles The inability to burn ____________ Heat

Physical Properties vs. Chemical Properties How do we tell whether a change in something is physical or chemical? Physical changes _____________________________ Chemical changes ____________________________ ____________________________ keep the same physical properties create new substances with different properties Ex: Mixing How can you separate these back to their original form? Sugar waterSalad

Label the following as Physical or Chemical changes. 1. Salt dissolving in water __________________ 2. Oxygen in the air turns iron to rust _________________ 3. Bacteria give off acids which makes milk turn sour ____________________ 4. A piece of wood is sawed in half ____________________ 5. A piece of wood is burned in a campfire ________________ 6. A cheap ring turns your finger green _________________ 7. Butter is melted and poured over popcorn ______________ 8. A chunk of aluminum metal is flattened into aluminum foil ______________________ 9. A raw egg is boiled ______________________ 10. Gasoline making a car engine run __________________ 11. Pennies are melted and turned into copper wire __________________________ 12. A metal spoon next to a heater gets warm. _________________________ Physical Chemical Physical Chemical Physical Chemical Physical

Matter Chapter 2

Matter has ___________ and takes up __________________.) What are some physical properties of matter that we can use to identify an object?

Solubility : Ductility: Malleability:

Density: D = __M__ V 9. a.The density of a particular substance is always ________________ at a given ____________________ and _____________________. b. The density of one substance is usually ___________________ from the that of another substance. c. The size of the sample does _______ affect its density! Example: Which sample of gold is more dense? ________________________ V =__M__ D M = D x V

Density of liquids: ________________________ ________________________ ________________________ ________________________

Chemical Properties of Matter Chemical properties of matter describe a substance based on its ability to __________________________________________ with different properties. Examples of chemical properties: 1. Flammability - ___________________________ Nonflammability - _______________________ 2. Reactivity - _____________________________ _____________________________. Examples: ____________ _______________ ____________

Physical Properties vs. Chemical Properties How do we tell whether a change in something is physical or chemical? Physical changes _____________________________ Chemical changes ____________________________ ____________________________ Ex: Mixing How can you separate these back to their original form? Sugar waterSalad

Label the following as Physical or Chemical changes. 1. Salt dissolving in water __________________ 2. Oxygen in the air turns iron to rust _________________ 3. Bacteria give off acids which makes milk turn sour ____________________ 4. A piece of wood is sawed in half ____________________ 5. A piece of wood is burned in a campfire ________________ 6. A cheap ring turns your finger green _________________ 7. Butter is melted and poured over popcorn ______________ 8. A chunk of aluminum metal is flattened into aluminum foil ______________________ 9. A raw egg is boiled ______________________ 10. Gasoline making a car engine run __________________ 11. Pennies are melted and turned into copper wire __________________________ 12. A metal spoon next to a heater gets warm. _________________________