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Transcript of Chemistry. A type of change involving the nucleus of an atom A. Physical change B. Chemical Change...
![Page 1: Chemistry. A type of change involving the nucleus of an atom A. Physical change B. Chemical Change C. Nuclear Change D. A base.](https://reader036.fdocuments.net/reader036/viewer/2022062322/56649e695503460f94b65784/html5/thumbnails/1.jpg)
CHAPTER 2 REVIEWChemistry
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A type of change involving the nucleus of an atom
1 2 3 4
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A. Physical changeB. Chemical
ChangeC. Nuclear ChangeD. A base
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Digestion of starch in the mouth is a _________ _______
1 2 3 4
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A. Physical changeB. Chemical
ChangeC. Nuclear ChangeD. A base
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A substance that has more OH- ions than H+ ions is a(an)
A. B. C. D.
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A. AcidB. BaseC. IonD. Solute
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Anything that occupies space and has mass
A. B. C. D.
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A. WeightB. MatterC. CellD. Physical Change
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Where are protons and neutrons located?
A. B. C. D.
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A. NucleusB. Electron cloudC. Energy levelsD. Neutrons
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The atomic number of Oxygen is 8, which is also the number of
A. B. C. D. E. F.
0% 0% 0%0%0%0%
A. ProtonsB. NeutronsC. ElectronsD. Both A & BE. Both A & CF. Both B &C
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Tearing a piece of paper is an example of ________?
1 2 3 4
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A. Physical changeB. Chemical
ChangeC. Nuclear ChangeD. A base
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One Carbon atom has 6 neutrons and another carbon atom has 8 neutrons. The two atoms are
A. B. C. D.
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A. CompoundsB. IsomersC. IsotopesD. ions
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In covalent bonds, electrons are …….
A. B. C. D.
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A. GainedB. LostC. SharedD. transferred
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The number of atoms in 15 H2O is
A. B. C. D.
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A. 15B. 30C. 45D. 60
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The number of molecules in 15 H2O is
A. B. C. D.
0% 0%0%0%
A. 15B. 30C. 45D. 60
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The energy required to start a chemical reaction is called
A. B. C. D.
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A. Activation energy
B. Potential energyC. Kinetic energyD. Inherent energy
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Which of the following structures represents a diatomic molecule
A. B. C. D.
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A. NaClB. H-OC. H- C=C-HD. O=O
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A substance dissolved in other substances is known as a
A. B. C. D.
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A. CompoundsB. LiquidC. SoluteD. Solvent
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When a carnation is put in red colored water, the petals turn red because of
A. B. C. D.
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A. AdhesionB. CohensionC. Thermal energyD. Capillarity
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A solution with a pH 8 is ____ times weaker than a pH 12
A. B. C. D.
0% 0%0%0%
A. 100B. 1,000C. 10,000D. 100,000
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The Loss of Electrons is called (hint LEO)
A. B. C. D.
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A. ReductionB. OxygenC. OrangeD. Oxidation
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Which of the following is a balanced equation
A. B. C. D.
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A. C5H12 + O2 --->3 CO2 +2 H2O
B. Zn + HCl ---> 2ZnCl2 + H2
C. FeCl3 + NH4OH ---> Fe(OH)3 + NH4Cl
D. CH4 + 2 O2 ---> CO2+ 2H2O
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A pizza, made of crust, sauce,sausage, and cheese(not baked), is an example of
A. B. C. D.
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A. An atomB. A compoundC. A moleculeD. A mixture
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A paperclip floating on water is due to what?
A. B. C. D.
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A. GravityB. Surface tensionC. CapillarityD. Thermal energy
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An atom is stable when…
A. B. C. D.
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A. Protons = Electrons
B. Its inner energy level is full
C. Its outer energy level is full
D. Protons > Electrons
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Electrons, protons, and neutrons are respectively located ___ in relation to the nucleus
A. B. C. D.
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A. Inside, outside, inside
B. All in the nucleus
C. Outside, inside, outside
D. Outside, inside, inside
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What mostly comprises the mass of an atom?
A. B. C. D. E.
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A. Protons B. Neutrons C. Electrons D. A and BE. All of the above
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Which of the following are/is an example(s) of a diatomic molecule?
A. B. C. D. E.
0% 0% 0%0%0%
A. H2B. COC. F2D. A, B, and CE. A and C
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If I make a salt water solution, identify the solvent and solute respectively.
A. B. C. D.
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A. Salt, waterB. Salt, salt waterC. Water, saltD. Salt water, salt
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Which of the following is a correct molecular formula?
A. B. C. D.
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A. H-O-HB. 3CH4C. methaneD. H
H C H
H
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Which of the following is an incorrect molecular formula?
A. B. C. D.
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A. CO2B. LiFC. Be3N2D. Na2Cl
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A noble gas readily bonds with other atoms.
A. B.
0%0%
A. True B. False
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Which of the following is not a chemical change?
A. B. C. D.
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A. Melting iceB. Burning woodC. Rusting ironD. The Statue of
Liberty turning green
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Where are hydrogen bonds found?
A. B. C. D.
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A. CohesionB. AdhesionC. CapillarityD. All of the above
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If the atomic # is changed, what is altered?
1 2 3
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A. The charge B. The element C. The mass
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If you change the number of electrons, then what is altered?
A. B. C.
0% 0%0%
A. The chargeB. The elementC. The mass
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C12 and C14 are called isotopes because the number of ________is different in the atoms.
A. B. C. D.
0% 0%0%0%
A. ElectronsB. ProtonsC. NeutronsD. Atoms
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Endergonic reactions release energy?
A. B.
0%0%
A. TrueB. False
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What kind of bonds hold water molecules together?
A. B. C. D.
0% 0%0%0%
A. Ionic bondsB. hydrogen
bondsC. endergonic
bondsD. cement bonds
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What kind of bonds have an unequal sharing of electrons?
A. B. C. D.
0% 0%0%0%
A. HydrogenB. Ionic C. CovalentD. Polar Covalent
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Which of the following numbers would indicate a strong acid?
A. B. C. D.
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A. 13B. 8C. 6D. 2
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Which are the reactants in the equation below? 2 H+ + CO3
2− H2O + CO2
A. B. C. D.
0% 0%0%0%
A. 2H, H2OB. 2H, CO2C. 2H, CO3D. H2O, CO2
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Which of the following is NOT a way to make an atom stable?
A. B. C. D.
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A. Share electronsB. Give electrons awayC. Receive electronsD. Add neutrons