Chemistry of life Flashcards
what is matter
anything that takes up space and has mass
What is an atom? and what is it made of?
tiny particles that make up an element
Atoms are made of Protons, Neutrons, and Electrons
what is a molecule
A group of atoms bonded together
what is a compound
a molecule that has more than 1 element
Covalent bond-chemical basis, strength, and example?
Atoms share electron pairs, strong, O-H bond within water molecule
Hydrogen bond-chemical basis, strength, examples?
atom with partial negative charge attracts atom with partial positive charge; form between different parts of a large molecule, weak, attracts adjacent water molecules to each other
Ionic Bond- chemical basis, strength, and example?
One atom donates 1 or more electrons to another atom, forming oppositely charged ions that attract each other, strong but break easily in water, NaCL(Sodium chloride)
what is a chemical reaction
when molecules or compounds are chemically changed
ex. photosynthesis
reactants vs products?
molecules that participate in a reaction are reactants and molecules formed by a reaction are products
hydrophilic vs hydrophobic?
philic- attracts water
phobic- cannot attract water
H+
hydrogen ions
OH-
hydroxide ions
what substance releases H+ when dissolved in water
acid
what type of solutions have a low H+ concentration?
Basic
what substance releases OH- when dissolved in water
base
