Anatomy and Physiology 1: Exam 2 Questions and Answers

Anatomy and Physiology 1: Exam 2 Questions
and Answers
matter - ✅✅1. anything that has mass and takes up space

2. can exist in 1 of 3 states



3 states of matter - ✅✅1. Solid

2. Liquid

3. Gas



energy - ✅✅the capacity to do work



3 forms of energy - ✅✅1. kinetic energy

2. chemical energy

3. electrical energy



kinetic energy - ✅✅energy of motion



chemical energy - ✅✅energy contained in chemical bonds between atoms and molecules



electrical energy - ✅✅energy from moving electrical charge



chemical elements - ✅✅a substance that can't be broken down into simpler substances; consists of
atoms (ex. an atom of oxygen)



major elements of the body - ✅✅98.5% of our body weight is made of:

1. hydrogen

2. oxygen

, 3. nitrogen

4. carbon



atom - ✅✅basic unit of matter.



3 subatomic particles - ✅✅1. Protons

2. Neutrons

3. Electrons



proton - ✅✅- positive charge

- found in the nucleus



neutron - ✅✅- neutral (no charge)

- found in the nucleus



electron - ✅✅- negative charge

- found in circular cloud around nucleus (electron cloud)



molecules - ✅✅chemical particles composed of 2 or more atoms united in a chemical bond



compounds - ✅✅- molecules composed of 2 or more different elements

- a compound is a type of molecule



chemical bonds - ✅✅forces that hold molecules together or attract one molecule to another



types of chemical bonds - ✅✅1. Ionic Bonds

2. Covalent Bonds

3. Hydrogen Bonds