Are the following scenarios physical or chemical changes? Grape juice turns to wine
Wood burns to ashes
Steam condenses on the lid of a pot
A broken leg mends itself
Gasoline burns in an engine
An infant gains 10 lbs
A rock is crushed to powder
Red and green marbles are mixed together in a bag
Lava cools to form rock
Corn kernels are turned into popcorn
Describe the difference between
A mixture and a compound
Pure and impure substances
Homogeneous and heterogeneous mixtures
How many types of atoms can you expect to find in an elemental substance?
Use the periodic table to answer the following:
What element is in the 2nd group and 4th period?
What element is in the 17th group and 5th period?
Where are metals found on the periodic table?
What are their characteristics?
Where are nonmetals found on the periodic table?
What are their characteristics?
What family does the element Cl belong to?