Lab semester 1 review
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23 terms
Terms | Definitions |
|---|---|
 what is the Meniscus? | concave surface of a liquid resulting from surface tension |
| where do you measure volume of a liquid? | bottom of meniscus |
| convert 123,000 to scientific notation | 1.23 x 10^5 |
| formula to convert F to C | 1.8(*C) + 32 |
| formula to convert C to F | (*F-32) / 1.8 |
| basic units for length, mass and volume | meter, gram, liter |
| Formula to find area of a box | L x W x H |
| Define Acid | Substance that dissociates when dissolved in water |
| Define Base | substance the reduces hydrogen ion concentration when dissolved in water |
| Define pH | measure of power of the hydrogen ion concentration in a solution. |
| what id pH neutral? | 7 |
| Define Anthocyanins | plant pigment used as pH indicator Ex: red cabbage extract |
| Define Buffer | special solutions that help maintain pH by resisting changes. |
| 3 ways to measure pH | pH meter, Anthocyanin indicators, pH paper |
| Know pH level with matching color | pH 2 = red pH 3 = pink pH 5 = violet pH 7 = purple pH 8 = blue pH 12 = green |
| Which antacid neutralized acid best? | alka-selzer |
| Define Colorimetry | Chemicals used to test for presence of marcomolecules |
| Define oxidation | interaction between oxygen molecules and other substances |
| What is Sudan IV? | used to test for lipids. Red stain |
| Define Emulsion | Mix of 2 or more liquids that are normally unblendable |
| Define Emulsifier | Stabilizes an emulsion by increasing it's kinetic energy |
| Define Hydrolysis | Bonds between monomers broken down by addition of water EX: Digestion |
| Difference between polar and non polar | polar like water (Hydrophillic) non-polar doesn't like water (Hydrophobic) |
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