A | B |
Are lipids soluble in water? | No |
What composes lipids? | Carbon, hydrogen, oxygen |
Anything which has a mass and takes up space | Matter |
What are four subatomic particles | Proton, Nuetron, Electron, Atomic Mass Unit |
Positively charged in the nucleus | Proton |
Uncharged in the nucleus | Neutron |
Particle distributed within a liquid, gas, solid | Suspension |
Proteins are structural materials for... | Growth and Repair |
Where do acids fall on the pH scale? | Below 7 |
Chemical producing hydrogen ions in a water solution | Acid |
Where do bases fall on the pH scale? | Above 7 |
What # is considered neutral on pH scale? | 7 |
What are two types of componds? | Inorganic and Organic |
Large molecules formed when many monosaccharides bond | Polyaccharides |
What are the simplest carbohydrates? | Monosacharides |
What are 2 examples of carbohydrates? | Sugars and starches |
What is a main source of energy? | Carbohydrates |
Easily bonds to other compounds by forming chains or rings | Bonds in organic compounds |
What is a common solvent? | Water |
Orgnaic compounds that store energy fats and oils | Lipids |
Substances togther but not chemically combined | Mixture |
One substance dissolved into another | Solution |
When can compunds be formed? | When atoms share electrons |
contains two atoms of the same kind | Diatomic molecules |
The number that precedes a formula is called | A coefficient |
What does a coefficent indicate? | The # of molecules |
How many elements are man made? | 14 |
Negatively charges; in constant motion around the nucleus | Electron |
How many elements occur naturally? | 92 |
Sodium has a positive ion. How is it written? | Na + |
Atomic Mass Unit =?? | Proton + neutron |
When do isotopes occur naturally? | @50 |
Chlorine has a negative ion. How is it written? | Cl- |
When was Dalton's Atomic Theory developed? | 1803 |
What are 3 parts of Dalton's atomic theory? | 1. Elements are composed of like atoms 2. Atomic Number. 3. Atomic Mass |
What are the five most common elements found in the human bodt (in order) | 1. Hydrogen 2. Carbon 3. Nitrogen 4. Oxygen 5. Fluorine |