Review for semester 1 final exam 1.What are 2 topics that you are confident in for the exam? 2.What are 2 topics that you still need to study for the exam?

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Presentation transcript:

Review for semester 1 final exam 1.What are 2 topics that you are confident in for the exam? 2.What are 2 topics that you still need to study for the exam? 01/23/2015

Subatomic particles Ions & Isotopes Density Atomic structure Miscellaneous Jeopardy Trash Ball

Subatomic Particles : 100 Where are neutrons located? Back Answer: In the nucleus

Back Which subatomic particle has virtually NO mass? Answer: Electrons Subatomic Particles : 200

Back Which subatomic particles make up most of an atom’s mass? Answer: The protons & neutrons Subatomic Particles : 300

Back Which particle is a proton attracted to? Answer: an electron. Subatomic Particles : 400

Back As an electron gets further away from the nucleus, what happens to the coulombic attraction ? Answer: The coulombic attraction decreases Subatomic Particles : 500

Back How is the mass number of an atom determined? ANSWER: Add the number of Protons & Neutrons Ions & Isotopes : 100

Back Why is the average atomic mass not a whole number ? Answer: It is a WEIGHTED average of all the isotopes of that element Ions & Isotopes : 200

Back If 1 proton were added to a helium atom, what would we name it? Answer: lithium Ions & Isotopes : 300

Back If an element has 17 protons and 18 electrons, will it be a cation or an anion? Answer: anion (Cl-) Ions & Isotopes : 400

Back If an atom has… atomic number of 11 mass number of 22 how many neutrons does it have? Answer: 11 neutrons Ions & Isotopes : 500

Back What is the formula for density? Answer: D=M/V Density : 100

Back What is the formula to solve for mass if you know volume and density? Answer: M= V * D Density : 200

Back What is the volume of a cube that is 3cm on each side? Answer: 27 cm 3 Density : 300

Back Which is more dense: 5 ml of water or 10 ml of water? Answer: They have the same density Density : 400

Back A cube has a mass of 10 kg and a volume of 5 cm 3. What is its density? Answer: 2000 g/cm 3 Density : 500

Back Where do we find electrons in an atom? Answer: In the electron cloud Atomic Structure : 100

Back What did Rutherford’s gold foil experiment discover about atoms? Answer: Atoms are mostly made up of empty space. Atomic Structure : 200

Back How does an electron go from ground state to excited state? Answer: The electron has to absorb energy. Atomic Structure : 300

Back What causes an atom to emit a colored light wave? Answer: An electron jumps from the excited state to the ground state. Atomic Structure : 400

What force keeps the atom together? Answer: Coulombic Attraction Back Atomic Structure : 500

Back 20,000 mm = _____m ? Answer: 20 meters Miscellaneous : 100

Back Convert to scientific notation: 34,000 Miscellaneous : 200

Back What is mass? Answer: The amount of matter in a substance Miscellaneous : 300

Answer: Independent = variable that the scientist is manipulating Dependent = variable that depends on the independent variable. Back Define independent and dependent variables. Miscellaneous : 400

Back What are the two equations that relate wavelength, frequency, and energy? Answer: E = hv and c = v Miscellaneous : 500