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Question | Answer |
What is an element | a pure substance |
What are two or more elements joined together called? | compounds |
How many elements are present in the human body? | 26 elements |
Identify the 4 elements that make up 96% of the human body | carbon,oxygen,hydrogen, nitrogen |
Positively charged subatomic particle | protons |
Negatively charged subatomic particle | electrons |
Subatomic particle that has no charge | neutrons |
Unequal number of protons and neutrons | isotopes |
any charged particle | ion |
Type of bond that transfers electrons from one element to another | ionic bond |
Type of bonds that share electrons | covalent |
Positive charged ion is called | Cation |
Negative charged ion is called | Anion |
Releasing of Hydrogen ions create | Acid |
Increased OH- identifies a(n) | Base |
scale used to measure H+ ion concentration | pH |
Simple sugars | monosaccharides |
Example Table sugar, Lactose, Maltose | Dissacharides |
Commonly called sugars and starches | carbohydrates |