Create an account
Anything that occupies space and has mass; solids, liquids, and gases; distinguished by physical properties
Properties of matter that can be observed and measured without changing the chemical structure of the substance; density, freezing point, melting point, etc.
A combination of 2 or more substances that retain all their physical properties and can be seperated by physical means
A mixture with a composition of substances that are not evenly distributed throughout (one at top, one at bottom, etc.)
A heterogenous mixture with large particles at the bottom that can be obtained without filtration
An effect that occurs when you shine light through a water source, and if it contains small particles, the light scatters, and if the water is pure, the light shines through evenly
The smallest piece of matter still retaining its physical properties ("building blocks of matter")
1, 2, or 3 letters, always starting with capital letters and then lowercase for the rest, to represent elements; used by scientists internationally (i.e. H, C, Ne...)
Shows a chemical reaction; has different names from start to finish, but same number of atoms of each element (i.e. 2H₂+ O₂-> 2H₂O)
Breaking down bonds of chemicals and forming new ones, rearranging atoms ito new substances
A substance that, when broken down, contains uniform composition of the atoms; each has its own distinct properties
The number written below the line of the chemical symbol that represents the ratio of atoms to a unit of the substance
The resulting substance(s) in a chemical reaction/ equation from the reactants, written on the right side of an arrow
A positively- charged subatomic particle in the nucleus cluster(center of atom)- p⁺¹; in a neutral atom atom, the number of protons is the same as the number of nuetrons
A non- charged subatomic particle that's also in the nucleus cluster- n; in a neutral atom, the number of neutrons is the same as the number of protons
An atom that has a charge, or unequal number of protons and electrons; mostly, an ion will occur from a dropped or added electron (since it is easier for them to change as they are in the electron cloud)
A substance formed by anions and cations held by ionic bonds; the overall charge should balance out to neutral
Rules for ionic compounds
Write the cation (positive) first, then anion (negative) (Li⁺, Cl⁻); change the subscript(s) until the charge reaches zero (Mg²⁺, Br⁻, 2-1=0, 2-2= 0); get the GCF to 1; if polyatomic ion, use parenthesis- OH⁻, Ca²⁺ Ca²(OH⁻)
Rules for naming ions
Write the name of the cation first, then anion; anion should be changed so it ends in "-ide" if not a polyatomic ion (lithium chloride); if a polyatomic ion, anion stays same (ammonium); if cation is a transition metal, include charge in Roman numerals (Iron III)
A test that proves if an ion is present in a substance or not (positive vs. negative results); the judge is color change and precipitate formation
A solution that has no ions in it, as a reference for the water samples (de- ionized/ distilled water)
A solution containing a set (large) amount of ions in it, to compare the water samples with
Row 1: +1; Row 2: +2; Row 13: +3; Row 14: +-4; Row 15: -3; Row 16: -2; Row 17: -1
Ions in each row of the periodic table of elements
Hydrogen (H₂); Nitrogen (N₂); Oxygen (O₂); Flourine (F₂); Chlorine (Cl₂); Bromine (Br₂); Iodine (I₂)
Tanic acid from leaves is taken into rivers by rainwater
Why the Hillborough River turns dark brown in the rainy season
Pollution (bacteria); water carries too many nutrients; water with not enough oxygen; wastewater (treated water)
Problems with Hillsborough River from tributaries
4- Base Project
Economical way of controlling flooding, by shutting off the flow of water during flooding and diverts it to land; also, preserve nearby forests helps battle flooding
Large- mouth bass; mercury
People (children) can't eat ____ in the Hillsborough RIver because they have large amounts of ____
Use un-dissolvable, nontoxic water; wash vehicles over concrete; pick up after pets; keep pollution off streets
4 ways to preserve the Hillsborough River
There is a lack of flowing water; fertilizers wash into the water, and the scientists have to rid of the algae that forms by using chemicals
Why the Lower Hillsborough River's water quality is usually low
An extension of Tampa Bay, where fresh water/ salt water mix
Why the area under the dam is an estuary
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together