Alloy metals are classified as homogeneous mixtures because o a single alloy sample looks different throughout
o they are pure substances
o they consist of only one kind of atom
o they have the same appearance throughout

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same