Define: inference, observation, hypothesis, dependent variable, independent variable, theory.

• Inference is a guess; observation is a theory.

• Hypothesis is a theory; observation is a guess.

• Observation is gathering data; hypothesis is a testable statement.

• Theory is a guess; dependent variable is a constant.

Given a scientific scenario, can you identify the IV, DV, constants, and control variables?

• IV is the control; DV is the constant.

• IV is the independent variable; DV is the dependent variable.

• Constants are variables that change; control variables are the main focus.

• IV is the dependent variable; DV is the independent variable.

All elements in a family have what in common? How many family/groups are there in the periodic table?

• Same atomic number; 18 groups.

• Same number of protons; 18 groups.

• Same number of valence electrons; 18 groups.

• Same atomic mass; 17 groups.

What are the 6 elements necessary for life?

• Carbon, Helium, Oxygen, Nitrogen, Phosphorus, Sulfur.

• Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur.

• Carbon, Hydrogen, Helium, Nitrogen, Phosphorus, Sulfur.

• Carbon, Hydrogen, Oxygen, Neon, Phosphorus, Sulfur.

Given a diagram of an atom, can you identify: protons, neutrons, electrons, nucleus, electron cloud?

• Protons are in the electron cloud; electrons are in the nucleus.

• Neutrons are in the electron cloud; protons are in the nucleus.

• Protons and neutrons are in the nucleus; electrons are in the electron cloud.

• Electrons and protons are in the nucleus; neutrons are in the electron cloud.

Where are these subatomic particles found in the atom? Proton, neutron, electron.

• Proton and neutron in the nucleus; electron in the electron cloud.

• Proton in the electron cloud; neutron and electron in the nucleus.

• Electron in the nucleus; proton and neutron in the electron cloud.

• Neutron in the electron cloud; proton and electron in the nucleus.

The atomic number of an element is equal to the number of what 2 subatomic particles?

• Protons and electrons.

• Neutrons and electrons.

• Protons and neutrons.

• Neutrons and positrons.

Looking at a Bohr model of an atom, be able to identify: Atomic number, atomic weight, electron number, its family and period.

• Atomic number is the total weight; family is the electron number.

• Atomic weight is the number of protons; period is the atomic number.

• Atomic number is the number of protons; family is the group number.

• Electron number is the atomic weight; period is the family number.

What elements do all organic materials have?

• Carbon, Helium, Oxygen.

• Carbon, Hydrogen, Oxygen.

• Carbon, Nitrogen, Helium.

• Carbon, Neon, Oxygen.

Who are the 5 major scientists we studied who contributed to the Cell Theory?

• Hooke, Leeuwenhoek, Schleiden, Schwann, Virchow

• Newton, Einstein, Curie, Darwin, Mendel

• Galileo, Copernicus, Kepler, Hubble, Hawking

• Pasteur, Fleming, Jenner, Koch, Lister