CAMPBELL BIOLOGY EXAM 1 |66 QUESTIONS AND ANSWERS

CAMPBELL BIOLOGY EXAM 1 |66 QUESTIONS AND ANSWERS
Scientific method: - -1) Observation
2) Question
3) Hypothesis
4) Design an experiment
5) Prediction
6) Do experiment/collect data
7) Analyze data

-What 4 elements make up 96% of living matter? - -Carbon, hydrogen, oxygen, nitrogen

-Atomic Number - -Number of protons in the nucleus

-Mass Number - -Sum of protons and neutrons

-Isotopes - -Different number of neutrons

-Radioactive isotope - -decay spontaneously, giving off energy

-Valence Electrons - -found in outermost shell (valence shell)

-Covalent Bond - -shared electrons

-Ionic bond - -strip electrons from their bonding partners

-Hydrogen bond - -Bond two hydrogen

-Solution - -liquid that is completely homogenous mixture of substances

-Solvent - -Dissolving agent in a solution

-Solute - -Substance that is being dissolved

-Hydrophilic (polar) - -affinity for water

-Hydrophobic (nonpolar) - -doesn't have affinity for water

-Acid - -Any substance that increases the H+ concentration of a solution

-Base - -Any substance that reduces the H+ concentration of a solution

-Acid pH: - -pH<7

-Base pH: - -pH>7