The Study of Life
The process of gradual change in a population or species over time.
What is evolution?
The atomic number is the total number of ____ in an atom.
What are protons?
The outermost shell of an atom.
What is the valence shell?
The nucleus of the atom contains the ____ and the ____...
What are protons and neutrons?
Molecule that donates hydrogen ions.
What is an acid?
The collection of all ecosystems on Earth.
What is the biosphere?
The mass number is the total number of ____ and ____ in an atom.
What are protons and neutrons?
The chemical bond that forms between ions with opposite charges.
What is an ionic bond?
Molecules that have the same chemical formula but different molecular structure.
Molecules that donate hydroxide ions.
What is a base?
Organisms with cells that have nuclei and membrane-bound organelles.
What are eukaryotes?
Adhesion, capillary action, cohesion, and surface tension are all defining qualities of...
The positive ion formed when an atom loses one or more electrons.
What is a cation?
The arrangement of electrons in an atom's electron shell. 1s22s22p63s23p5
Substances that resist the change in pH by absorbing and releasing hydrogen or hydroxide ions.
What is a buffer?
Single-celled organisms that lack organelles and do not have nuclei surrounded by a nuclear membrane.
What are prokaryotes?
What is electronegativity?
What is an anion?
Polar covalent bonds form as a result of ____ electron sharing.
What is unequal electron sharing?
Scale ranging from 0-14 that measures the level of acid or base a substance is.
What is the pH scale?
Cell Theory Hierarchy
____ --> ____ --> ____ --> ____
What is cells, tissues, organs, and organ systems?
The group of atoms that imparts a specific function to the base carbon chain.
* Remember FORM = FUNCTION
What is a functional group?
____ is attracted to water due to polar molecules, and ____ describes uncharged nonpolar molecules that do not interact well with water.
Nonpolar covalent bonds form as a result of ____ electron sharing.
What is unequal electron sharing?
Filter paper treated with a natural water soluble dye that changes color based on its environment's pH.
What is litmus paper?