6863976
Description
Flashcards by Kiley Sheehan, updated more than 1 year ago
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Created by Kiley Sheehan
over 7 years ago
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| Question | Answer |
| What is biology? | The science of life |
| What are the 6 characteristics of life? | Composed of 1 or more cells Reproduce using DNA Obtain energy Sense and respond to environment Maintain homeostasis Can evolve as a groups |
| Matter | Anything that has mass and occupies a volume of space |
| Elements | Substances that cannot be broken down or transforms chemical into other substances |
| Atom | Fundamental unit of matter |
| Protons | Positively charged |
| Neutrons | No charge |
| Protons and neutrons compose what? | Protons and neutrons |
| Electrons | Negatively charged and fill shells around the nucleus |
| Molecule | Made up of more then one atom |
| Compound | A chemical Structure containing multiple elements |
| Molecules form through ______ bonds between atoms | Chemical |
| Stable atoms | Neon and Helium, full outer electron shell |
| Reactive atoms | Carbon and Oxygen, have partially full outer electron shells |
| Covalent bonds | The sharing of electrons |
| Ionic bonds | A complete transfer of electrons |
| Hydrogen bonds | A positive charge on one molecule is attracted to a negative charge in another molecule |
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