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Chemistry Final 2 Of 3

Test Description: Chem final part 2

Instructions: Answer all questions to get your test result.

1) Who discovered the neutron?

ABohr BEinstein CChadwick DSchrodinger

2) Iron has 3 isotopes. 5.84% is Fe-54, 91.68% is Fe-56 and .31% is Fe-58. Without any calculations what is the approximate atomic mass of iron?

AAbout 55 BAbout 54 CAbout 56 DAbout 57

3) Discovered the charge and mass of the electron

AChadwick BMillikan CDalton DThomson

4) Developed the plum pudding model of an atom

AThomson BRutherford CMillikan DDalton

5) This element has 26 electrons, 29 neutrons, and 26 protons

ACalcium BLead CHelium DIron

6) From the choices below which step would occur first?

AForming a hypothesis Bdrawing conclusions Cmaking observations Dcreating experiments

7) A hypothesis...

ACan be completely proven Bdoes not have to be tested to be accepted as probably correct Cis a possible answer to a question, tested through an experiment Da proven fact

8) A controlled experiment allows the scientist to test

Aseveral variables Ba mass of information Cone variable Da conclusion

9) The vertical columns in the periodic table are known as...

Agroups Bperiods

10) Silicon is lustrous and is a conductor of heat and electricity, but is not malleable or ductile. For this reason, silicon is known to be a

Ametal Bnon-metal Call of the above Dmetalloid

11) The elements in Groups 1 and 2 are known respectively as

AAlkali metals, Halogens BHalogens, Noble Gases CHalogens, Transition Metals DAlkali metals, Alkali Earth Metals

12) The order of elements in the periodic table is based on

Athe number of protons in the nucleus Bthe electric charge of the nucleus Cthe number of neutrons in the nucleus Datomic mass

13) Atoms of elements that are in the same group have the same number of

Avalence electrons Bprotons Cprotons and neutrons Dneutrons

14) Which of the following elements is an alkali metal?

ASodium BCalcium CMercury DMagnesium

15) Carbon and other nonmetals are found in which area of the periodic table?

Aright side Bbottom rows Cleft most side Dmiddle column

16) Magnesium is located to the right of sodium because Magnesium has

Ano neutrons Bmore protons Cno protons Dfewer protons

17) In Medeleev's periodic table, elements in each column had similar?

Asymbols Batomic numbers Catomic masses Dproperties

18) How was Mendeleev's periodic table arranged?

Aby increasing atomic mass Bby decreasing atomic number Cby decreasing atomic mass Dby increasing atomic number

19) Mendeleev left gaps in his periodic table because

Athe table was too full Bprotons belonged there Cno known elements fit there Dthe table was too small

20) Each column of the periodic table is

Aan element Ba period Can isotope Da group

*select an answer for all questions

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