1.1-1.3
1.4-1.6
1.7-2.2
2.3-2.5
OTHER!!!!!!
THE OUTSIDERS!!!!!
100
give the definition of matter
anything that takes up space and has mass
100
Name 4 pure substances.
Aluminum, Table Sugar, Uranium, Diamond.
100
1.7-What are the benefits of using CFL's(compact fluorescent light bulbs)?
Answer-Save Money: An incandescent bulb that uses 75 watts can be replaced with a CFL bulb that only uses 20 watts. The average cost of a kilowatt is 8 cents, and the average CFL bulb lasts 8000 hours. Over 8000 hours, a 75-watt incandescent bulb costs $48.00 to run, while a 20 watt CFL (putting out the same amount of light) comes in at nearly a quarter of the cost at $12.80! That is a savings of $35.00 over the life of the light bulb. Less Energy: Replacing one incandescent bulb with one CFL bulb keeps 450 pounds of carbon dioxide out of the atmosphere over the life of the bulb. If everyone in America used energy-efficient lighting, we could retire 90 average-sized power plants, reducing CO2 emissions, sulfur oxide, and high-level nuclear waste.Less Frequent Changes: The average lifetime of an incandescent light bulb is less then a year. The average lifetime of a CFL is 8 to 10 years.Environmental Benefits-Each CFL over the course of its life saves 450 pounds of carbon from being produced. This is a powerful savings considering that the average home has between 30-50 sockets, according to the EPA. If only thirty sockets were replaced with CFLs that would be a savings of 13,500 pounds or 6.75 tons of carbon. The average small car uses 3.55 tons of carbon per year, changing your light bulbs would be like almost taking two small cars off the road for a year.Mercury and disposal-CFLs do contain 5 milligrams of mercury according to the EPA. The mercury is used to make the CFLs more energy efficient, but can be harmful if released into the environment. CFLs actually reduce mercury because mercury is a byproduct of power generation. Since less power is needed for CFLs the total mercury is less then if an old incandescent light bulb was used.
100
What toxic chemicals do apple seeds contain?
Apple seeds contain a toxic chemical called cyanide.
100
Define heterogenous and homogenous mixtures. Give an example of each.
Heterogenous is a mixture with different parts that you can see. Homogenous is a mixture with parts that you cannot see. Heterogenous: Pizza Homogenous: Stainless Steel
200
what is the study of matter called
chemistry is the name for study of matter
200
Name 3 pure substances that are toxic to people and animals.
Mercury, cadmium, lead.
200
If your town promotes CFL's,how will you dispose of used or broken bulbs?
Answer-1) Your local garbage service Probably the best place to start is with whoever currently picks up your household trash or recyclables. If you pay for this service, you'll almost certainly find a customer service number on your bill. Give them a call and ask if they offer CFL or mercury recycling. If not, politely suggest they do so. Here's an opportunity to write a letter, attend a meeting or take some other activist role in highlighting the importance of proper CFL disposal. The appropriate follow-up will depend on whether your trash service is privately or publicly held. 2) Municipal government Whether or not local trash service is provided by a private contractor, your local municipality (city, county or parish) is ultimately responsible for waste disposal. Most phone directories have a "blue pages" directory of local government agencies. Try the listing for sanitation services. While curbside recycling is by no means universal, your area may have designated drop-off locations or periodic CFL collections. Should your local agency not have any CFL-specific provisions, ask about safe disposal of mercury or fluorescent tubes. 3) Retailers Unless you bought CFLs from Ikea, one of the first major vendors to offer a free take-back program, you're probably going to get some blank stares when you ask the manager of your local store about CFL recycling. It's worth the effort, though: retailers need to know their customers want safe disposal of the good they purchase. If you bought your CFLs from Walmart, consider contacting their corporate headquarters and asking that they establish a company wide CFL-return program. 4) Earth 911 Earth 911 is probably the United States and Canada's largest online clearinghouse of recycling information. Visit their site and enter "CFL" and your ZIP code in the "Find a Recycling Center" field at the top of each page. Alternately, try "mercury" and "fluorescent bulbs." If there's something in your region, it will almost certainly be listed. Earth 911 is currently attempting to expand its coverage to Europe, the first step toward an international registry of recycling options. 5) Commercial services There are a variety of for-profit companies that provide CFL and fluorescent bulb disposal by mail. Failing a local option, these firms represent a responsible and environmentally friendly channel for CFL recycling. Lightbulbrecycling.com, for instance, will send you a handy, postage-paid plastic pail which will accommodate about 30 CFLs — more than most homes will use in many years. Just drop your spent CFLs in their well-engineered pail, and call FedEx for pick-up. The downside is that the service is quite expensive: about $120 per shipment. At today's prices, this almost triples the unit price of your CFL. On the other hand, with the energy you'll save with each bulb, you're still ahead of the game. You'll also know for sure that your CFLs are being recycled in a safe fashion.
200
What is the formula for the solubility of a solute
solubility = maximum mass of solute that will dissolve (g - - - - - - - - - - - - - - - - - - - - - - - - - - - 100ml of solvent at certain temperature
300
what is the meaning of particle theory of matter
explanation of what matter is made up of and how it behaves
300
How do you create a solution?
You have to mix different types of particles together evenly.
300
What are descriptive examples of gas and solid solutions?
Answer-The air u breath is about 78% nitrogen gas,21% oxygen gas, and 1% argon gas BRASS-Solute: zinc (solid)Solvent: copper (solid)Solution Type: solid-solidUse: decorative metal
300
Which is more soluble: sugar or salt? List their solubility in 200 (temperature), and in 100 ml of water.
Sugar is more soluble. 204g/100ml of water. Salt. 36g/ 100 ml of water.
300
What is the difference between concentration and solubility?
Concentration is measured in grams of solute par 100ml of solution but solubility is measured in grams of solute per 100ml of solvent.
400
describe what solids are and give 2 ex
state of matter with a definite volume and definite shape table book
400
How do you create a mechanical mixture?
You have to mix many things that cannot mix together.
400
What are the 5 main sources of water pollution?
Answer-1.fertilizers and pesticides from farms 2.waste from mining 3.fertilizers and pesticides from lawns 4.industrial waste 5.sewage and household products put down the drain
400
What is Foxglove tea? Does it affect you? If it does, is it good or bad for you? What is the key component in it?
Foxglove tea increases the speed at which your heart beats. It is good for people with weak hearts in small amounts. In large amounts, however, it can be fatal. The key component in it is digitalis.
400
Does sugar dissolve equally in all solvents and of so then why?
sugar dissolves better in some solvents than in others. If a solute dissolves in a particular solvent, we say that it is soluble in that solvent. If a solute does not dissolve, it is insoluble. Sugar, for example, is soluble in water but insoluble in vegetable oil.
500
explain how the particles of gas move
it moves quickly and in all different directions
500
Does 100% juice only have 1 type of particle?
NO. It actually has water, sugar, flavour, and vitamin particles.
500
what are examples of soluble and insoluble materials and why?
A soluble item is salt. An insoluble item is lead. Salt: The polarity of water molecules enables water to dissolve many ionically bonded substances. Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions. The amount of a substance that can dissolve in a liquid (at a particular temperature) is called the solubility of the substance. The substance being dissolved is called the solute, and the substance doing the dissolving is called the solvent. lead:Elementary lead does not dissolve in water under normal conditions (20oC, and pressure = 1 bar). It may however occur dissolved in water as PbCO3 or Pb(CO3)22-. A well-known example of a water soluble lead compound is lead sugar (lead(II)acetate), which derived its name from its sweet nature. Lead frequently binds to sulphur in sulphide form (S2-), or to phosphor in phosphate form (PO43-). In these forms lead is extremely insoluble, and is present as immobile compounds in the environment. Lead compounds are generally soluble in soft, slightly acidic water.
500
What causes the solute (Ex. Sugar) to dissolve – detailed explanation
The solvent dissolves because of solvation. Solvation is a chemical process in which solvent molecules and molecules or ions of the solute combine to form a compound.
500
Children often find it easier to (fill the blank) (fill the blank) as a (fill the blank) rather than take pills. -
Children often find it easier to (swallow) (medicine) as a (liquid) rather than take pills.