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Sem 1 Exam Review 2

Test Description: Semester 1 Review 2

Instructions: Answer all questions to get your test result.

1) When water goes from liquid to solid -

Afreezing Bsublimation Cmelting Devaporation

2) What two elements are found in covalent compounds?

Ametals and metals Bmetals and nonmetals Cmetals and metalloids Dnonmetals and nonmetals

3) What two elements are found in ionic compounds?

Ametals and nonmetals Bmetals and metals Cmetals and metalloids Dnonmetals and nonmetals

4) Which of the following is a covalent compound

ALi2O BK2O CCO2 DFe2O3

5) Near the ceiling of a room the air is warmer. The warm air rises because of -

Aconvection Belectricity Cconduction Dradiation

6) Which scientist used gold foil to find the structure of an atom?

AThomson BBohr CRutherford DChadwick

7) Which of the following are true about the modern model?

Aelectrons are in a set orbit like planets around the sun Bthe atom is a solid ball Celectrons are in a 3D orbit Dthe atoms is made of imaginary space

8) Which of these is neither an acid or a base?

ApH 3 BpH 11 CpH 1 DpH 7

9) Which is the strongest base?

ApH 3 BpH 7 CpH 14 DpH 11

10) Which equation is not balanced?

ACaCO3 - CaO + CO2 BH2 + O2 - 2H2O C2 Na + Cl2 - 2NaCl DFe2O3 + H2 - 2Fe + 3H2O

11) Which of the following is an exothermic equation?

AA + B + energy - AB Bsolid CAB - A + B + energy Denergy

12) Which subatomic particles has equal mass?

Aelectrons and neutrons Bproton and neutrons Cprotons and nucleus Dprotons and electrons

13) What is the product? MgCO3+ 2HCl - MgCl2 + H2CO3

AHCl BMgCl CMgCO3 + 2HCl DMgCl2 + H2CO3

14) Which element will lose valance electrons?

AF BNa CO DNe

15) What happens when water freezes?

AThe molecules speed up escape phase Bmolecules squeeze together Cthe molecules slow down until the bond together Dform irregular shape

*select an answer for all questions

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