Question | Answer |
What is an element? | simplest type of substance....can't be broken down into anything simpler |
Where are metals located on the periodic table? | to the left of the staircase |
luster | ability to reflect light.....looks shiny |
magnetic | ability to attract other metals |
malleable | able to bend and be shaped without breaking |
ductile | ability to be stretched and pulled into wires |
conduct electricity | allows the flow of electrons |
color | most are gray, but not all. color is used to identify specific metals |
calcium | strengthens bones, controls heart rate, helps contract muscles,found in dairy products |
potassium | proper working of nervous system, helps contract muscles, found in bananas, oranges potatoes |
sodium | proper nervous system function, controls muscle contraction, found in table salt and other foods |
iron | on red blood cells s hemoglobin, helps transport oxygen through the body, low iron=anemia, found in red meat and dark green veggies |
Properties of non-metals | Opposite of metals |
dull | not shiny |
brittle | will break, not malleable or ductile |
poor conductors | won't conduct heat or electricity |
hydrogen | in the air an in water...very important |
nitrogen | atmosphere is 78% nitrogen; used by plants to grow |
carbon | in all living and once iving things |
oxygen | gives life to humans and fire |
chlorine | poisonous gas; found in table salt; made into bleach |
fluorine | found in toothpaste as fluoride |
metalloids | have properties of metals and non-metals; they all have luster |
4 uses for Boron | 1.borax-added to water to "soften" it; 2.prevents "ring-around-the-tub"; 3.boric acid-helps treat infection; 4.used in rocket fuel |
4 uses for Silicon | 1.combined with oxygen, it forms sand, which when melted forms glass; 2.fiber optics; 3.semi-conductor used in computer chips, circuit boards 4.used on tiles lining the bottom of the space shuttle |