Properties of water, solutions, suspenisons, etc.
Help!
|
|
||||
|---|---|---|---|---|---|
| The chemical formula for water is | H2O
🗑
|
||||
| Water is made up of | one oxygen atom bonded with two hydrogen atoms
🗑
|
||||
| Why is water polar? | Each end of the molecule has a slight electric charge.
🗑
|
||||
| The positive hydrogen ends of one water molecule atttract to | the negative oxygen ends of another water molecule.
🗑
|
||||
| surface tension | teh tightness across thece of water caused by water molecules pulling on each other.
🗑
|
||||
| capillary action | is due to the attraction among molecules of water and surrounding materials
🗑
|
||||
| solution | a mixture that forms when one substance dissolves another
🗑
|
||||
| solvent | the substance that does the dissolving
🗑
|
||||
| solute | the substance that is present in a solution in a smaller amount
🗑
|
||||
| water is called the universal solvent because | it can dissolve so many substances
🗑
|
||||
| list the three states of matter | solid, liquid, gas
🗑
|
||||
| evaporation | occurs as water molecules at the surface of a liquid absorb energy and turn into a gas.
🗑
|
||||
| condensation | occurs when gaseous water moleules slow down, losing energy, and turn into a liquid
🗑
|
||||
| specific heat | the amount of thermal energy required to raise the temperature of one kilogram of a substance by one degree Celcius.
🗑
|
||||
| Why does ice float? | It is less dense than liquid water.
🗑
|
||||
| What is a suspension? | a mixture in which particles can be seen and easily separated by settling or filtration.
🗑
|
||||
| What is a solution? | a well mixed mixture
🗑
|
||||
| How can you separate salt from water? | by evaporation
🗑
|
||||
| In a solution, the ________ is dissolved by the solvent. | solute
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
sohare3
Popular Science sets