| A | B |
|---|
| acids taste | sour |
| bases taste | bitter |
| the pH of acids are | pH 0-6 |
| the pH of bases are | pH 8-14 |
| an enzyme in stomach is | pepsin |
| an enzyme in mouth is | amylase |
| orange is an | acid |
| soap is a | base |
| water is | neutral |
| pH of the mouth | neutral |
| pH of the stomach | acidic |
| pH of the small intestine | basic |
| a salt forms | from a neutralization reaction |
| When pH is low describe the concentration of hydrogen/hydroxide ions | concentration of hydrogen ions is high |
| When pH is low describe the concentration of hydroxide ions. | concentration of hydroxide ions is low |
| When pH is high describe the concentration of hydrogen ions | the concentration of hydrogen ions is low |
| NaOH is a | is a base |
| HCl is a | is an acid |
| To test for a base use what color litmus? | use red litmus |
| To test for an acid use what color litmus? | use blue litmus |
| corrosive means | to eat away at other materials |
| mechanical digestion is | chewing and mashing of food |
| chemical digestion is | breaks large molecules down by use of enzymes |
| an example of a natural polymer | nails |
| an example of a synthetic polymer | plastic |
| an example of a synthetic polymer | glue |
| an example of natural polymer | cellulose in celery, keratin in hair |
| alloy | made up of two or more metals |
| brass is | mixture of copper and zinc |
| metals are | hard but able to be hammered into sheets, conduct electricity, able to be made into wire |
| amalgam is | mercury mixed with silver |
| plastic bags is this type of synthetic polymer | low density polyethylene |
| laundry detergent bottles | HDPE |
| bottle caps are made up of | polypropylene |
| immitation leather are made up of | polyvinyl chloride |
| styrofoam is composed of | polystyrene |
| an example of an item containing nylon | fishing line |
| teflon is a | coating on pans |
| inventor of weatherproof rubber is | Charles Goodyear |
| composite | mixing of two or more substances to make a better substance |
