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- Multiple ChoicePlease save your changes before editing any questions.
LiBr is called
lithium bromine
lithium (I) bromine
lithium bromide
lithuim (I) bromide
- Multiple ChoicePlease save your changes before editing any questions.
Which of these combinations is an ionic compound?
Metal and Metal
Nonmetal and Nonmetal
Metal and Nonmetal
Cation and Cation
- Multiple ChoicePlease save your changes before editing any questions.What is the name of N2O3Nitrogen trioxideDinitrogen oxideDinitrogen trioxideNitrogen oxide
- Multiple ChoicePlease save your changes before editing any questions.What is the chemical formula for Tetrasulfur pentoxide?SOS4OS4O5S5O4
- Multiple ChoicePlease save your changes before editing any questions.
A(an) __________ bond exists between two nonmetals.
ionic
covalent
- Multiple ChoicePlease save your changes before editing any questions.What is a positivly charge atom called?cationanion
- Multiple ChoicePlease save your changes before editing any questions.
What is a negatively charged atom called?
Anion
Cation
Ion
- Multiple ChoicePlease save your changes before editing any questions.
What is a valence electron?
an electron that is found in the outermost shell of an atom.
an electron found in the innermost shell of an atom.
an electron found in the middle shell.
- Multiple ChoicePlease save your changes before editing any questions.
What type of reaction involves 2 substances combining to form 1 new compound?
Decomposition Reaction
Single Displacement Reaction
Double Displacement Reaction
Synthesis Reaction
- Multiple ChoicePlease save your changes before editing any questions.
What are the reactants in the chemical equation pictured?
CH4 and CO2
CH4 and O2
CO2 and H2O
O2 and H2O
- Multiple ChoicePlease save your changes before editing any questions.
What are the products of the chemical reaction pictured?
CH4 and CO2
CH4 and O2
CO2 and H2O
O2 and H2O
- Multiple ChoicePlease save your changes before editing any questions.
2Na +S → Na2S
Double Replacement
Decomposition
Combustion
Synthesis
- Multiple ChoicePlease save your changes before editing any questions.What is a coefficient?The small number on the right of the chemical symbol.The large number to the left of a formula.
- Multiple ChoicePlease save your changes before editing any questions.Which problem is balanced?PbO2 + 2H2SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H2
- Multiple ChoicePlease save your changes before editing any questions.Balance this equation.
_Mg + _Cl2 --> _MgCl21, 2,1already balanced2,1,11,1,2 - Multiple ChoicePlease save your changes before editing any questions.Balance this equation
_Zn+_HCl-->_ZnCl2 +_H21,1,2,11,1,1,21,2,1,12,1,1,1 - Multiple ChoicePlease save your changes before editing any questions.What does the Law of Conservation of Mass state?Matter cannot be gained or lost in a chemical reaction.Matter can only be lost in a chemical reaction.Matter can only be gained in a chemical reaction.Matter can be gained and lost in a chemical reaction.
- Multiple ChoicePlease save your changes before editing any questions.Number of H in 3(NH₄)₂CrO₄46824
- Multiple ChoicePlease save your changes before editing any questions.What are the smaller numbers that you CANNOT change in a chemical equation?CoefficientProductsReactantsSubscript
- Multiple ChoicePlease save your changes before editing any questions.What is the molar mass of table salt (NaCl)?116.886 g/mol35.453 g/mol22.990 g/mol58.443 g/mol
- Multiple ChoicePlease save your changes before editing any questions.
Determine the number of moles of AlNO3 that are in 264 g of the compound.
2.97 mol
3.45 mol
2.73 mol
1.86 mol
- Multiple ChoicePlease save your changes before editing any questions.
A baker needs 6 g of baking soda for a recipe. The chemical formula for baking soda is NaHCO3. How many moles of baking soda is needed?
0.071 mol
0.167 mol
0.273 mol
0.214 mol
- Multiple ChoicePlease save your changes before editing any questions.2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?5.2 g2.6 g690 g45 g - Multiple ChoicePlease save your changes before editing any questions.B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?13.8 g O23.86 mol of O2124 g O2 - Multiple ChoicePlease save your changes before editing any questions.
How many valence electron does Beryllium have?
1
2
0
4
- Multiple ChoicePlease save your changes before editing any questions.
Which subatomic particle has NO CHARGE?
Protons
Neutrons
Electrons
Nucleus
- Multiple ChoicePlease save your changes before editing any questions.
Which subatomic particle has a POSITIVE charge?
Protons
Neutrons
Electrons
Nucleus
- Multiple ChoicePlease save your changes before editing any questions.
Which subatomic particle has a NEGATIVE charge?
Protons
Neutrons
Electrons
Nucleus
- Multiple ChoicePlease save your changes before editing any questions.
Which subatomic particle tells you the identity of the Element?
Protons
Neutrons
Electrons
Nucleus
- Multiple ChoicePlease save your changes before editing any questions.
Which Element has 21 protons?
Carbon
Zinc
Titanium
Scandium
- Multiple ChoicePlease save your changes before editing any questions.
If an element has 11 protons and 12 Neutrons, what is it's atomic mass?
12
11
23
1
- Multiple ChoicePlease save your changes before editing any questions.
A FULL OUTER SHELL has how many electrons? (Not including the first level)
8
7
4
10
- Multiple ChoicePlease save your changes before editing any questions.
What is the name for this group of elements?
Alkali
Halogens
Noble Gases
Alkali-Earth
- Multiple ChoicePlease save your changes before editing any questions.
In the formula 2C6H12O6, what is the Coefficient?
5
6
2
12
- Multiple ChoicePlease save your changes before editing any questions.
What are isotopes?
different element with the same number of electrons
same element with a different number of electrons
same element with a different number of neutrons
different element with the same number of neutrons
- Multiple ChoicePlease save your changes before editing any questions.
What are the yellow elements in the following picture?
metals
nonmetals
metalloids
- Multiple ChoicePlease save your changes before editing any questions.
Anything that has mass and takes up space.
atom
colloid
compound
matter
- Multiple ChoicePlease save your changes before editing any questions.
Which element will have a higher electronegativity than Arsenic (As) ?
Carbon
Antimony
Germanium
Neon
- Multiple ChoicePlease save your changes before editing any questions.
You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?
bread
jelly
peanut butter
sandwhich
- Multiple ChoicePlease save your changes before editing any questions.When is the law of conservation of matter true?all the timeunder some conditions, but not otherswhen energy is given offonly in February
- Multiple ChoicePlease save your changes before editing any questions.This could be the dot diagram ofMg, group 2.Cl, group 17.C, group 14.O, group 16.
- Multiple ChoicePlease save your changes before editing any questions.Signs that a chemical change has occurred includea change in colorthe release of bubblesthe production of an odorall of the above
- Multiple ChoicePlease save your changes before editing any questions.The density of water is.1 g/cubic cm10g/cubic cm1.0 g/cubic cm0 g/cubic cm
- Multiple ChoicePlease save your changes before editing any questions.In a liquid, the molecules have a definite shape and a definite volumeTrueFalse
- Multiple ChoicePlease save your changes before editing any questions.Mixing salt and waterChemical ChangePhysical Change
- Multiple ChoicePlease save your changes before editing any questions.What is the number of protons that the element in this image contain?1471518
- Multiple ChoicePlease save your changes before editing any questions.What is the atomic mass of "F"9181719
- Multiple ChoicePlease save your changes before editing any questions.the central region of an atom where its neutrons and protons are is itsnucleuselectron cloudcorecenter
- Multiple ChoicePlease save your changes before editing any questions.Something that is made up of only one kind of atom is known as _________________.a moleculea compoundan elementa proton
- 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.This is an ionic bond with electrons sharedThis is an ionic bond with electrons transferredThis is a covalent bond with electrons sharedThis is a covalent bond with electrons transferred
- Multiple ChoicePlease save your changes before editing any questions.What is the density of an object having a mass of 8.0 g and a volume of 25 cm3?0.32 g/cm33.1 g/cm3200 g/cm32.0 g/cm3
- Multiple ChoicePlease save your changes before editing any questions.
The picture shows a piece of paper being cut in half with scissors. Which of the following statements is true of this process?
It is a chemical change because the paper particles were broken and rearranged.
It is a chemical change because the substance was changed to something new.
It is a physical change because the substance remained the same.
It is a physical change because the paper only changed its state of matter.
- Multiple ChoicePlease save your changes before editing any questions.
What is the molecular geometry of this boron trifluoride (BF3)?
linear
bent
trigonal planar
tetrahedral
- Multiple ChoicePlease save your changes before editing any questions.
One mole is equal to the number of atoms in exactly 12 grams of carbon-12. The number (6.02 × 1023 particles per mole) is known as
Planck's constant.
Avogadro's number.
Coulomb's constant.
Faraday's number.
- Multiple ChoicePlease save your changes before editing any questions.What two types of measurements make up DENSITY?Mass and VolumeTemperature and MassGrams and CentimetersVolume and Weight
- Multiple ChoicePlease save your changes before editing any questions.Electronegativity is...how good an atom is at attracting electronsthe ability of an atom to lose electronsthe energy required to remove an electron from a specific atomhow easy it is to make friends.