Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
Food Chemistry Exam1
Atoms,Molecules,&Energy 2
| Question | Answer |
|---|---|
| What is the smallest unit of a compound? | molecule |
| What is the smallest unit of an element? | atom |
| How many elements have been identified? | 113 |
| How many elements occur naturally on Earth? | 82 |
| How many elements have been created by scientist? | 31 |
| Compounds can only be separated into their pure components by __________ means. | chemical |
| What compound is ( H2O)? | Water |
| What compound is (NH3)? | Ammonia |
| What compound is (C6H12O6)? | Glucose |
| What mixture can be separated by decanting(pouring) or filtration, and the composition is not uniform throughout? | Heterogeneous mixture |
| What mixture can be separated by distillation or chromatography and composition of the mixture is the same throughout? | Homogeneous mixture |
| What compound is ( NaCl) | Sodium Chloride |
| What is electron hunger or an attraction between atoms or molecules that holds them together? | Chemical bonding |
| What are the complete capturing of the electrons between each other;separated by ions? | Ionic Bonds |
| What are strong bonds that share electrons (sugar or water) | Covalent Bonds |
| What are strong and stable , but termed "weak" because they do not form molecules but temporary links between molecules? | Weak Bonds between polar molecules(water) |
| Atoms and molecules can absorb or release energy in several different forms, specifically these two_________&_________ | Kinetic(energy in motion) and Potential(stored energy) |
| In the kitchen two forms of energy_______&_______ | Chemical/Bond energy & Thermal/Heat energy |
| Heat energy is transferred to foods via______,________&________ | Conduction, convection, or radiation |
| What cooking material is the best conductor;very expensive; and toxic in large amounts? | Copper |
| What cooking material is a good conductor;economical and light and lacks density to hold a lot of thermal energy? | Aluminum |
| What cooking material does not conduct heat evenly;bright and shiny,durable? | Stainless Steel |
| What cooking material is dense and slow conductor, although hold heat well? | Iron/Cast Iron |
| Name the four Biomolecules? | Water(cook in it, phase transitions), Fats/Lipids(butter, oils emulsifiers), Sugar/Carbs(caramelization,sweeteners), Proteins |
| Two methods of cooking? | Moist heat (boiling , stewing, simmering) and Dry heat(roasting,grilling, pan frying) |
| Effects of heat? | Proteins coagulate, sugars caramelize, water evaporates, fats melt. |
| What element is Na? | Sodium |
| What element is Ca? | Calcium |
| What element is K? | Potassium |
Created by:
jazzyg
Popular Chemistry sets