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Chemistry Test Review Test Day is Nov. 21st

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In what way would you calculate density? A.Volume / mass B.Gas / liquid C.mass / volume D.Solid / gas

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Compare the Lewis dot diagram to the Bohr model. A.Both tell the number of valence electrons B.Lewis dot only tells valence electrons and the Bohr model shows protons, neutrons, and electrons C.Both tell only electrons D.Both have protons and electrons

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What is the number of protons and electrons in Boron? A.5 B.10 C.11 D.none

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What is the atomic number of Silicon? A.28 B.15 C.14 D.32

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What is matter? A.Anything that has mass B.The force of gravity pulling on an object C.Anything that takes up space D.Anything that has mass and takes up space

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What family is oxygen in? A.Noble gases B.Halogens C.Oxygen family D.Alkaline earth metals

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What is it called when a substance goes directly from a solid to a gas? A.Sublimation B.Evaporation C.Melting point D.Boiling point

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John measured a metal cubes weight to be 3grams, then he finds the volume to be 5ml. He said the density is 15g/ml. Is his answer accurate? A.Yes, 3g x 5ml = 15g/ml B.No, 5ml / 3g = 1.7g/ml C.Yes, 15g/ml is correct D.No, 3g / 5ml =.6g/ml

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How many groups are on the periodic table? A.18 B.4 C.9 D.32

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Which describes the nature of chemicals? a.Chemicals are synthetic, not naturally occurring. b.Chemicals are naturally occurring, not synthetic. c.Chemicals can be both naturally occurring and synthetic. d. Chemicals are neither synthetic nor naturally occurring.

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If you place a metal ball in a bowl of oil it will sink because A.It is heavy B.It is more dense than water C.It is less dense than the oil D.It is more dense than the oil

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How many periods are in the periodic table? A.3 B.7 C.18 D.9

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What does the atomic number represent? A.Number of protons B.Number of electrons C.Number of neutrons D.Both A and B

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What is the 1 st step in the scientific process? A.Form a hypothesis B.Ask a question C.Draw a conclusion D.Analyze results

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How are protons and neutrons alike? A.There is always the same number of them in an atom B.They are both located in the nucleus C.They are both found in the shells of an atom D.They are both elements

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Why is lithium more reactive than mercury? A.Because mercury has fewer valence electrons B.Because 1 is a nonmetal and one is a metalloid C.Because lithium has more valence electrons D.Because mercury has more valence electrons

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What type of element is hydrogen? A.Metalloid B.Metal C.Noble gas D.Nonmetal

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Demonstrate how to calculate density: mass=5g volume=10cm 3 A..5 g/cm 3 B..5 cm 3 /g C..5 g/cm D.2 g/cm 3

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Which types of elements are found on the Periodic Table? A.Metals B.Metalloids C.Nonmetals D.All of the above

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Why do you think there are 118 elements in the periodic table? A.that is all they can think of B.That is all of the discovered elements C.The scientists arent very smart D.There could not possibly be any more

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What are the units for density? A.g/ml 3 B.g/cm 3 C.g/ml D.Both B and C

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Predict what will happen if a rocks density is 3g/cm 3 and is thrown into water. A.It will sink B.It will float C.It will burn D.It will sink then float to the top

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What is a Bohr model? A.A model of an atom B.A model of an element C.A model of a compound D.A model of a molecule

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Identify the independent variable: the effect of food coloring on the way people see. A.Peoples sight B.Food coloring C.Both D.Neither

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Identify the dependent variable: If I add more sunlight to the plants, then the plant growth would increase. A.Sunlight B.Plant C.Plant growth D.All of the above

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Is air matter? A.Yes B.No C.Sometimes D.Never

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Which of the following families is NOT able to bond with other families of elements? A.Carbon family B.Alkaline earth metals C.Noble gases D.Atoms family

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Which is a compound? A.Co B.Cu C.Au D.H 2 O

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What would the atomic mass of an object be with 26 protons and 30 neutrons? A.4 B.56 C.14 D.26

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From what you know, where would we place a new element that was heavier than the others? A.It would go last on the periodic table B.It would on first on the periodic table C.It would go with the metals D.It would go with the metalloids

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Matter can be classified into what 2 categories? A.Mixtures and solutions B.Molecules and elements C.Elements and mixtures D.Pure substances and mixtures

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What is a proton? A.The smallest particle of an element B.A state of matter C.A small positive particle in the nucleus of an atom D.A type of candy

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What does the stair step on the periodic table tell you? A.The metalloids B.The metals C.The nonmetals D.Both A and B

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What is the name of the 1 st family on the periodic table? A.Transition metals B.Noble gases C.Alkaline earth metals D.Alkali metals

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How do you find the number of neutrons? A.Atomic number = neutrons B.Atomic mass atomic number C.Atomic mass = neutrons D.Atomic number + atomic mass

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What is the atomic number for gold? A.60 B.79 C.109 D.103

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What is the result of mixing water and sugar? A.Element B.Compound C.Mixture D.Solution

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What is a molecule? A.The smallest particle of a nucleus B.A combination of two or more atoms C.A negatively charged particle D.A combination of two or more elements

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If I change the ______, then the ______ will change. A.IV, DV B.DV, IV C.IV, controlling variable D.DV, controlling variable

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How do families run on the periodic table? A.Diagonal B.Horizontal C.Vertical D.Right to left

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Explain the main idea of a Bohr diagram? A.To show what an atom looks like B.To show the number of electrons C.To explain what each molecule is D.To show valence electrons

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What are the common characteristics of iron and gold? A.They are shiny B.They are malleable C.They are shiny and malleable D.They are poor conductors of electricity

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What is an electron? A.A tiny, negatively charged particle that moves around the nucleus of an atom B.A small, positively charged particle in the nucleus of an atom C.A substance that cannot be broken down any further

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Does the element K have 19 neutrons? A.No B.Yes C.Maybe D.I dont know

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Hydrogen is in what group? A.Metalloids B.Metals C.Gases D.Nonmetals

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Helium is a(n) A.Halogen B.Noble gas C.Transition metal D.Metalloid

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How many valence electrons are in the halogen family? A.1 B.2 C.8 D.7

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What would happen to waters density if the amount of water was cut in half? A.It would decrease B.It would increase C.It would stay the same D.It would go away

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Define the word ductile. A.To be able to bend B.To be able to break C.To be able to be pulled into a wire D.All of the above

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How many electrons are in the outer shell of lithium? A.14.5 B.1.586 C.3 D.2

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Which of the following best describes H 2 0? A.Atom B.Molecule C.Compound D.Both B and C

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An engineer needs a material that can easily be rolled into a thin wire that will carry an electric current. Which type of material would best suit his needs? a.Metalloid b.Metal c.Nonmetal d.halogen

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Which metalloid has the most neutrons? A.Tellurium B.Silicon C.Astatine D.Antimony

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The End!!!!!!