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- Multiple ChoicePlease save your changes before editing any questions.The number of protons in an element can be found by:looking up the group the element is in.subtracting the atomic mass from atomic numberlooking up the atomic masslooking up the atomic number
- Multiple ChoicePlease save your changes before editing any questions.The atomic mass on the periodic table is an average of all the ____ of an element based on abundance.protonsisotopesionscharges
- Multiple ChoicePlease save your changes before editing any questions.The valence electrons are the outermost electrons which determine an elements ________.masskinetic energyreactivityhalf-life
- Multiple ChoicePlease save your changes before editing any questions.What is always different about 2 isotopes of the same element?Their number of protonsTheir number of electronsTheir number of NeutronsTheir reactivity
- Multiple ChoicePlease save your changes before editing any questions.The horizontal row on the periodic table is called agroupfamilyperiodatomic number
- Multiple ChoicePlease save your changes before editing any questions.A vertical column is called...grouptowerperiodcrew
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is the most metallic element in period 3?Boron (B)Sodium (Na)Argon (Ar)Silicon (Si)
- Multiple ChoicePlease save your changes before editing any questions.Which of these element is the least metallic?Potassium (K)Carbon (C)Sulfur (S)Neon (Ne)
- Multiple ChoicePlease save your changes before editing any questions.The number at the bottom of each square on the periodic table is the ...atomic numberatomic masschemical symbolelement name
- Multiple ChoicePlease save your changes before editing any questions.The number at the top of each square on the periodic table is the ...atomic numberatomic massChemical SymbolElement Name
- Multiple ChoicePlease save your changes before editing any questions.Pure forms of these elements are stored in oil so they won't react with oxygen and water in the air.Alkali MetalsAlkaline-earth metalsHalogensNoble Gases
- Multiple ChoicePlease save your changes before editing any questions.Diamonds are a pure form of what element?CarbonOxygenSiliconSilver
- Multiple ChoicePlease save your changes before editing any questions.Most of the elements on the periodic table are classified as _____.MetalsNonmetalsMetalloidsPeriods
- Multiple ChoicePlease save your changes before editing any questions.This class of elements are sometimes called "semiconductors."MetalsNonmetalsMetalloidsGroups
- Multiple ChoicePlease save your changes before editing any questions.Which group of the periodic table is composed of inert (not reactive) gases?alkali metalsalkaline earth metalshalogensnoble gases
- Multiple ChoicePlease save your changes before editing any questions.Elements which are shiny, conduct electricity and heat are calledmetalnonmetalmetalloidnonexistent
- Multiple ChoicePlease save your changes before editing any questions.The atoms along the staircase are calledmetalsnonmetalsmetalloidsnoble gases
- Multiple ChoicePlease save your changes before editing any questions.Which is a halogen?HeliumChlorineOxygenNeptune
- Multiple ChoicePlease save your changes before editing any questions.Which is an alkali metal?MagnesiumIronSodiumEuropium
- Multiple ChoicePlease save your changes before editing any questions.Elements in a ..................have similar chemical properties.periodgrouprow
- Multiple ChoicePlease save your changes before editing any questions.Elements which are shiny, conduct electricity and heat are calledmetalnonmetalmetalloidnonexistent
- Multiple ChoicePlease save your changes before editing any questions.True or False: Elements in a group have the same number of electrons in their outer shell.truefalse
- Multiple ChoicePlease save your changes before editing any questions.In what section would Transition Metals be found?orangelight bluebluewhite
- Multiple ChoicePlease save your changes before editing any questions.Which section are the metals in?dark bluelight bluepurplepink
- Multiple ChoicePlease save your changes before editing any questions.What section is the least reactive?yellowreddark blueorange
- Multiple ChoicePlease save your changes before editing any questions.The atomic number of this pictured element is2858.6934NiNickel
- Multiple ChoicePlease save your changes before editing any questions.Who first had the idea of an atom?DemocritusDaltonThompsonRutherford
- Multiple ChoicePlease save your changes before editing any questions.The drawing above is Thomson’s ________.cathode ray tube experimentoil drop experimentgold foil experiment
- Multiple ChoicePlease save your changes before editing any questions.What does the Bohr model suggest?Atoms are small, hard, indivisible objects.That protons in the nucleus are attracted to electrons in the electron clouds.That electrons travel around the nucleus of an atom in orbits or definite paths.
- Multiple ChoicePlease save your changes before editing any questions.Who is the scientist who proposed the "solar system" model of an atom where the electrons revolve around the nucleus?Dmitri MendeleevNiels BohrErnest RutherfordCopernicus
- Multiple ChoicePlease save your changes before editing any questions.What is an atom mostly made up of?protonselectronsempty spaceneutrons
- Multiple ChoicePlease save your changes before editing any questions.Has mass and takes up space, made up of atoms.mattermassatomsenergy
- Multiple ChoicePlease save your changes before editing any questions.A bag of Skittles is an example of this.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.A solid block of gold (Au) is an example of this.ElementCompoundHeterogenous mixtureHomogenous mixture
- Multiple ChoicePlease save your changes before editing any questions.These things are the building blocks of all matter.ElementsCompoundsHeterogeneous mixtureHomogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.Paint is an example of this.ElementCompoundHeterogenous mixtureHomogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.Sugar mixed into water is an example of this.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.Trail mix is an example of this.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.These are substances that are a combination of two or more different elements.ElementCompoundHeterogeneous mixtureHomogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.Which box shows a mixture?ABCnone of these, they are all pure substances
- Multiple ChoicePlease save your changes before editing any questions.Classify CO2 as an element, mixture or compoundelementmixturecompound
- Multiple ChoicePlease save your changes before editing any questions.DIFFERENT kinds of atoms chemically combined to form a substance areMixtureElementCompoundSubstance
- Multiple ChoicePlease save your changes before editing any questions.
Mixture in which particles can be seen floating, but settle out to the bottom over time.
homogeneous mixture
suspension
colloid
heterogeneous mixture
- Multiple ChoicePlease save your changes before editing any questions.This contains a variety elements and compounds that ARE NOT chemically combined.WaterMixtureElementsCompounds
- Multiple ChoicePlease save your changes before editing any questions.How are the properties of elements related to the properties of the compounds they make?The properties of the compound are completely different than the properties of the elements.The properties of the compound are always the same as the properties of the elements.The element in the compound with the largest number of atoms gives the compound its properties.
- Multiple ChoicePlease save your changes before editing any questions.When potassium and bromine atoms form chemical bonds, which of these is produced?elementmixturecompound
- Multiple ChoicePlease save your changes before editing any questions.Which drawing is of a single compound.ABCD
- Multiple ChoicePlease save your changes before editing any questions.
A type of mixture in which there are floating particles that do not settle out over time.
Hetergoeneous
Colloid
Solution
Suspension
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following models best demonstrates a balanced chemical equation?
F
G
H
J
- Multiple ChoicePlease save your changes before editing any questions.
The reactants are on the left side of the chemical equation.
True
False
- Multiple ChoicePlease save your changes before editing any questions.What are the reactants in the chemical equation pictured?CH4 and CO2CH4 and O2CO2 and H2OO2 and H2O
- Multiple ChoicePlease save your changes before editing any questions.What is the large number written before a chemical formula called?CoefficientSubscriptReactantProduct
- Multiple ChoicePlease save your changes before editing any questions.What is the small number written after a chemical symbol called?CoefficientSubscriptProductReactant
- Multiple ChoicePlease save your changes before editing any questions.According to the law of conservation of mass...sometimes atoms are lostsometimes atoms are gainedatoms are never lost nor gainedatoms are lost and gained
- Multiple ChoicePlease save your changes before editing any questions.What do we call a substance that increases the rate of a reaction without participating in the reaction?catalystinhibitoracceleratordecelerator
- Multiple ChoicePlease save your changes before editing any questions.Which of the following will increase the rate of a reaction?raising the temperature of reactantsgrinding the reactants into a powderincreasing the concentration of reactantsall of the above
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is a sign that a chemical reaction has occurred?change in shapemeltingformation of a gasdissolving
- Multiple ChoicePlease save your changes before editing any questions.Which is a chemical change?freezing fruit juiceslicing a potatoboiling watercopper metal turning green
- Multiple ChoicePlease save your changes before editing any questions.Bread is toasted. How do you know a chemical change happened?The temperature decreasedThe color changedIt bubbled/fizzedA solid formed
- Multiple ChoicePlease save your changes before editing any questions.The Law of Conservation of Mass statesthat matter exists in all states and reacts the samethat matter can only be changed into new substances by introducing a catalystthat matter exists in the same state throughout any chemical changethat matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
- Multiple ChoicePlease save your changes before editing any questions.Products are found on the _ side of a chemical equation.leftright
- Multiple ChoicePlease save your changes before editing any questions.Balance:
_KI + _Br2 -> _KBr + _I22, 1, 2, 11, 2, 1, 22, 1, 1, 21, 2, 2, 1 - Multiple ChoicePlease save your changes before editing any questions.Balance:
_K + _O2 -> K2O1, 1, 11, 2, 12, 1, 24, 1, 2 - Multiple ChoicePlease save your changes before editing any questions.Amount of matter in an object:volumeweightmassdensity
- Multiple ChoicePlease save your changes before editing any questions.Volume is the amount of space an object takes up.TrueFalse
- Multiple ChoicePlease save your changes before editing any questions.The mass per unit of volume of a substance.DensityMassVolumeSolubility
- Multiple ChoicePlease save your changes before editing any questions.
Select all of the following that are physical properties.
Orange Color
Flammability
Melting Point
Solubility
- Multiple ChoicePlease save your changes before editing any questions.
Select all of the following that are chemical properties.
Reacts with acid
Density
Magnetism
Flammability
- Multiple ChoicePlease save your changes before editing any questions.
Select all of the following that are physical changes.
Ag (Silver) tarnishes
Food is digested
Ice melts
Salt dissolves in water
- Multiple ChoicePlease save your changes before editing any questions.
Select all of the following that are chemical changes.
Ag (Silver) tarnishes
Baking soda reacts w/ vinegar
Tire is inflated
Food is digested
- Multiple ChoicePlease save your changes before editing any questions.
____________ make up ____________ which make up _______________.
Elements, Atoms, Compounds
Compounds, Elements, Atoms
Atoms, Elements, Compounds
Atoms, Compounds, Elements
- Multiple ChoicePlease save your changes before editing any questions.
Atomic mass is determined by which two subatomic particles?
neutrons + protons
electrons + neutrons
protons + electrons
- Multiple ChoicePlease save your changes before editing any questions.
Atomic charge is determined by which two subatomic particles?
neutrons + protons
electrons + neutrons
protons + electrons
- Multiple ChoicePlease save your changes before editing any questions.
What are the particles that make up protons and neutrons?
zorks
atoms
plasmids
quarks
- Multiple ChoicePlease save your changes before editing any questions.
What is the smallest particle of an element that still represents that element?
isotope
proton
atom
quark