Chapter 2A powerpoint Flashcards
What is Matter?
matter is anything that takes up space and has mass
What are the states of matter?
gas liquid and solid
What are the elements that make up 96% of the body?
Carbon, Nitrogen, Hydrogen, and Oxygen
what are atoms
smallest particles of an element
each atom has a nucelous consiting of
protons and neutrons
describes protons, neutrons, and ekectrons
protons has a positive charge with an atomic mass of 1, neutrons have no charge. Both protons and neutrons are within the nucleus also have an atomic mass of 1. Electrons have negative charges and also move around the nucleus.
The number of protons are equal to
electrons
What are the different types of energy
potential and kinetic
what are the different forms of energy
radiaton/magnetic, electrical , chemical, and mechanical
what is an ionic bond
the sharing of one or two atoms
what is an covalent bond
bond created when ELECTRONS are shared
what are hydrogen bonds
weak attractions created by partially charged atoms in polar molecules.
Differiatae Inorganic and Organic molecules
Inorganic Molecules (do not consist of carbon) examples; are water acids, salts, and bases)
Organic Molecules (consisting of carbon molecules) examples; carbohydrates, nucleic acids, proteins, and lipids
Why does water make up 60-80% of living things
Polar so it’s a universal solvent, it absorbs and stores heat, and lastly it’s liquid at room temperature.
Why does water make up 60-80% of living things
Polar so it’s a universal solvent, it absorbs and stores heat, and lastly it’s liquid at room temperature.
