Science test atoms, physical chemical change, periodic table, acids bases
Periodic table, atoms, physical chemical changes , acids/bases
What three things go left to right?
What three things go up to down?
Which element is the oddball?
helium is weird because it has a full outer shell but only 2 electrons
Name the groups left to right
Alkali metals, Alkaline earth metals, transition metals, poor metals, semi metals,halogens, non-metals, noble gases ( lanthanides, actinades)
where are metals?
left of the semi metal line
where are non-metals?
right of the semi metal line
Name a halogen
flourine, chlorine, bromine, iodine, astatine, uponium
What group is highly reactive?
what group is highly non-reactive
which group is always combining with stuff?
what is an electron
small, zippy, negative charge, move in orbitals
what is a neutron
neutral/no charge, help make up the nucleus, same size as protons
what is a proton
positive charge, help make up the nucleus, same size as neutron
what is the format for an element square
Atomic number on top, abreviation, full name, atomic mass on bottom
what is a balanced atom?
an atom with an equal amount of protons, neutrons, and electrons
What is a characteristic of a physical change
state of matter change
What is a characteristic of a chemical change
gives off heat, new odor, gas, fizz, bubbles, color change
What happens in a chemical change
the atoms are changed, cant be reversed
what happens in a physical change
atoms stay the same, can be reversed
paper being ripped
marsh mellow being toasted
what turns litmus paper red
what turns litmus paper blue-green
what ranges 1-6 on the ph scale
what ranges 8-14 on the ph scale?
characteristics of a base
slippery, bitter, reacts with acids to form salt and water
characteristics of an acid
corrosive to metal, tastes sour, reacts with bases to form salt and water
what releases H+ ions in an aqueous solution
what releases 0- ions in an aqueous solution
what is 0-
what is H+
pee/spit, coffee, tomato juice, soda, orange juice, vinegar lemon, stomach acid, battery acid
sea water, baking soda, great salt lake, ammonia, soapy water, oven cleaner, liquid drain cleaner
what is neutral
how do you neutralize an acid
add a base