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Weaver1
Chemistry test review
| Answer | |
|---|---|
| What is a covalent bond? | -Two or more atoms sharing electrons -Two electrons per bond -Non+non |
| What is dissociation? | -The breaking apart of two water ions of opposite charge |
| What is an acid? | -A compound that as an H in front of the equation. |
| How does the ratio of H+ & OH- affect the substance? | -More H+ its acidic -More OH- its basic. |
| What is a base? | -A compound that has an OH in the back of the equation. |
| What does ph stand for? | -The power of hydrogen |
| Whats the definition of energy? | -The ability to do work. |
| What is potential energy? | -Stored energy. |
| What is kinetic energy? | -Energy in motion. |
| What is chemical energy? | -Potential energy in a chemical bond. |
| What is activation energy? | -Small amount of energy needed to start a chemical reaction. |
| What is an example of a physical change? | -Melting of ice. |
| What is a physical change? | -Its a change in the physical state of the substance. |
| Is a physical reaction permanent? | -No |
| What is a chemical change? | -The process where one substance is changed into an entirely new substance. |
| What is an endothermic reaction? | -Energy is absorbed by the reaction. |
| During and endothermic reaction, what happens to the temperature? | -It goes down. |
| What is an exothermic reaction? | -Energy is released during the reaction. |
| What are organic molecules? | -Made by a living thing |
| What elements make up Organic molecules? | -C,H |
| What does the Structural formula show? | -The Bonding arrangement |
| In a structural formula, where would the carbon sit if the substance is organic? | -The middle |
| What are the four organic molecule types? | -Lipids -Carbohydrates(sugar) -Protein -Nucleic acid(DNA) |
| What is the ratio of atoms in Carbohydrates? | -1:2:1 |
| What elements make up carbohydrates? | -C,H,O |
| Why does our body need carbohydrates(Sugar)? | -Energy |
| How are carbohydrates classified? | -By there degree of complexity. |
| Whats a monosaccharide? | -A simple sugar |
| What is an example of a monosaccharide? | -Glucose |
| About how many atoms are there per monosaccharide structure? | -3 to 7 |
| Whats a disaccharide? | -Two monosaccharides bonded together. |
| What is Dehydration synthesis? | -Its the process where two monosaccharides are combined. |
| Is water gained or lost during dehydration synthesis? | -One water is lost |
| What is hydrolysis? | -One water is added to a large sugar to break the bond. |
| What us hydrolysis the opposite of? | -Dehydration synthesis. |
| What is a polysaccharide? | -long chains of bonded monosaccharides. |
| What is starch? | -Temporary food storage in a plant. |
| What is Glycogen? | -Temporary food storage in the liver. |
| What kind of bond does starch have? | -Alpha |
| Can we humans break down an Alpha bond? | -Yes |
| Can we humans break up a beta bond? | -No |
| What is Cellulose? | -Cell wall in plants that are used for structure. |
| What two bonds does cellulose have? | -Alpha and Beta |
| What type of bond does starch have? | -Alpha |
| What type of bond does Glycogen have? | -Alpha |
| What is a lipid? | -Fat oils that do not dissolve in water. |
| What elements make up lipids? | -H,C,O |
| How does lipids appear on animals? | -As fat |
| How does lipids appear on plants? | -As oil |
| What are the two types of fatty acids? | -Saturated and Unsaturated. |
| Why can't the human body break down Saturated fatty acids? | -Because the H prevents the carbon chain from being digested. |
| Do saturated fatty acids have single bonds or double? | -Single |
| Can Unsaturated fats be easily digested? | -Yeah, it has double bonds. |
| What elements make up organic protein molecules? | -C,H,O,N |
| What are organic Proteins made from? | -Amino Acid |
| Whats a petide bond? | -The bond between amino acids through dehydration synthesis. |
Created by:
Stephylou66
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