CAMPBELL BIOLOGY CHAPTERS 1 – 5 EXAM 1 Q’S AND A’S

CAMPBELL BIOLOGY CHAPTERS 1 – 5
EXAM 1 Q’S AND A’S
Scientific method: - ANSWER-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? - ANSWER-Carbon, hydrogen,
oxygen, nitrogen

Atomic Number - ANSWER-Number of protons in the nucleus

Mass Number - ANSWER-Sum of protons and neutrons

Isotopes - ANSWER-Different number of neutrons

Radioactive isotope - ANSWER-decay spontaneously, giving off energy

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

Covalent Bond - ANSWER-shared electrons

Ionic bond - ANSWER-strip electrons from their bonding partners

Hydrogen bond - ANSWER-Bond two hydrogen

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

Solvent - ANSWER-Dissolving agent in a solution

Solute - ANSWER-Substance that is being dissolved

Hydrophilic (polar) - ANSWER-affinity for water

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

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

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

Acid pH: - ANSWER-pH<7

Base pH: - ANSWER-pH>7