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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?

AEinstein BChadwick CSchrodinger DBohr

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 57 CAbout 56 DAbout 54

3) Discovered the charge and mass of the electron

AChadwick BDalton CThomson DMillikan

4) Developed the plum pudding model of an atom

ARutherford BDalton CThomson DMillikan

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

AIron BCalcium CLead DHelium

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

Adrawing conclusions BForming a hypothesis Ccreating experiments Dmaking observations

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

Aa conclusion Bone variable Ca mass of information Dseveral variables

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 Ball of the above Cnon-metal Dmetalloid

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

AAlkali metals, Alkali Earth Metals BAlkali metals, Halogens CHalogens, Transition Metals DHalogens, Noble Gases

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

Athe electric charge of the nucleus Bthe number of protons in 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

Aneutrons Bprotons and neutrons Cvalence electrons Dprotons

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?

Amiddle column Bbottom rows Cleft most side Dright side

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

Afewer protons Bmore protons Cno protons Dno neutrons

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

Aatomic masses Batomic numbers Cproperties Dsymbols

18) How was Mendeleev's periodic table arranged?

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

19) Mendeleev left gaps in his periodic table because

Athe table was too full Bno known elements fit there Cprotons belonged there Dthe table was too small

20) Each column of the periodic table is

Aa period Ba group Can element Dan isotope

*select an answer for all questions

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