CHEM 120 Chamberlain EXAM 1 Questions With Complete Solutions

Hypothesis correct answer: a testable educated guess Experiment correct answer: how we test hypotheses Variable correct answer: Idea to be tested (only one) Control correct answer: Something the variable is tested against Experimental protocol correct answer: How do you do the test? Results correct answer: Data generated comparing variable to controls. Includes statistics to show results are meaningful Conclusion correct answer: Interpretation of results independent variable correct answer: The experimental factor that is manipulated; the variable whose effect is being studied. dependent variable correct answer: The variable that depends on the independent variable Protons correct answer: Positively charged particles Neutrons correct answer: the particles of the nucleus that have no charge Electrons correct answer: Negatively charged particles Isotopes correct answer: same atomic # different mass # Ions correct answer: The number of electrons is either greater than, or less than, the number of protons atomic mass correct answer: Number of protons and neutrons Neutrons equal correct answer: mass number - atomic number Electrons equal correct answer: Atomic Number - Charge Protons equal correct answer: Atomic number Ionic bond correct answer: The transfer of electrons from non-metal to metal