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1. a- physical property, b- chemical, c-chemical, d- physical
2. a- physical, b- chemical, c- chemical, d- chemical
3. a- chemical, b- chemical, c-physical, d-physical
4. a- physical because it is a color change, b- chemical because it is a trait that is imbeded into the chemical makeup, c- physical because is removes a substance, d- chemical becasue it seperates
5. already included in #4 ^^^
6. mixing ingredients in a bowl- physical, putting cookies in the oven- physical, oven heating up- chemical, cookies baking and rising- chemical
7. a- metal, b- nonmetal, c-nonmetal, d-metal
8. a- metalliod, b-metal, c- nonmetal, d- nonmetal
9. Ai (silicon) & As (arsenic)
10. a- shatter into pieces, b- will flatten without being shattered, c-phosphourous will shatter, d-shatter
11. brittle & do not conduct electricity
12. 1- luster, 2- maluable, 3- increased durability