Chemistry Basic Concept

A. Si
B. As
C. Te
D. None of the above

A. Ag
B. A
C. Au
D. Cu

A. endothermic
B. exothermic
C. unpredictable
D. same

A. A
B. Ag
C. Both
D. Neither

A. constitutive property
B. additive property
C. colligative property
D. intrinsic property

A. 1.008 x 10-3
B. 5.5 x 10-4
C. 1.84 x 10-4
D. 1.673 x 10-3

A. 1 x 10-1
B. 1 x 10-14
C. 1 x 10-7
D. 1

A. whole amount of reactant does not change into product
B. chemical equilibrium is established
C. a catalyst changes the direction of reaction
D. rate of forward reaction decreases as reaction proceeds

A. VSEPR
B. VBT
C. MOT
D. none of the above

A. Be+2H2O?Be (OH)2+H2
B. Be+H2O?Be (OH)2+H2
C. Be+H2O?[Be (OH)4]+2+H2
D. no reaction