What defines safe drinking water?
Safe drinking water is treated water that has been tested for harmful and potentially harmful substances and has met or exceeded drinking water quality standards set by the United States Environmental Protection Agency (EPA) and the State of Alabama.
What are the characteristics of drinking water?
Characteristics: Water is free from harmful bacteria, germs, suspended impurities and salts. It is clear, colourless and odourless. It contains small amounts of dissolved gases and minerals.
What are the 7 characteristics of water?
Unique properties of water
- Water is polar.
- Water is an excellent solvent.
- Water has high heat capacity.
- Water has high heat of vaporization.
- Water has cohesive and adhesive properties.
- Water is less dense as a solid than as a liquid.
What makes water unique?
Water is made up of two hydrogen (H) atoms and an oxygen (O) atom. It is unique in that it is bipolar, where the molecule has a slightly positive charge on one side (where hydrogen atoms are attached), and slightly negative on the other (just oxygen). The pH of pure water is about 7 at room temperature (25°C or 77°F).
What are the 3 main characteristics of water?
Physical characteristics of water quality
- Color – pure water is colorless; colored water can indicate pollution.
- Turbidity – pure water is clear and does not absorb light.
- Taste and odor – pure water is always tasteless and odorless.
What are 4 properties of liquid?
All liquids show the following characteristics:
- Liquids are almost incompressible. In liquids molecules are pretty close to each other.
- Liquids have fixed volume but no fixed shape.
- Liquids flow from higher to lower level.
- Liquids have their boiling points above room temperature, under normal conditions.
What are the 8 properties of water?
Terms in this set (8)
- Surface Tension. Cohesion allows water to pull together & forn droplets; or form an interface between it & other surfaces.
- Adhesion. Sticking of one stubstance to another.
- Imbibition.
- High Specific Heat.
- Cohesion.
- High Heat of Vaporization.
- Frezzing & Expansion Of Water.
- Versatile Solvent.
Is gas a property of water?
Water has unusual properties that make it different to other liquids. It is the only common substance that is naturally found as a solid (ice), liquid (water) or gas (water vapour).
Which is not a property of gas?
The density of gases are much larger than those of corresponding liquids. It is not a property of gases. Density is equal to mass divided volume. Since gases have larger volumes, their densities are lower than those corresponding to liquids.
What are the 10 gases?
Some examples of gases are listed below.
- Hydrogen.
- Nitrogen.
- Oxygen.
- Carbon Dioxide.
- Carbon Monoxide.
- Water Vapour.
- Helium.
- Neon.
What is a gas for kids?
Gases are air-like substances that can move around freely or they might flow to fit a container. They don’t have a shape either. Similar to liquids, gases can actually flow, but gases won’t stay put as solids or liquids do. They move around all the time.
How do you teach kids about gas?
Changes Between Liquid and Gaseous States Teaching kids about the state of matter is easier when you have something for them to look at. Try using a liquid-to-gas experiment to illustrate this change. Boil a pot of water on the stove. You turn up the dial and begin to heat it up.
Is a cloud a gas?
The invisible part of clouds that you cannot see is water vapor and dry air. The majority of the cloud is just plain air in which the invisible water vapor is mixed with and the very tiny water drops and ice particles are suspended in. A cloud is a mixture of gas, liquid and solids.
Is a pencil solid liquid or gas?
A desk, pencil, computer and toy truck are solid. Water and milk are liquids. The air around us is a gas.