Of the alkaline earth metals, which two elements are the least reactive?
What will be an ideal response?
Question 2
According to the Arrhenius concept, an acid is a substance that ________.
A) is capable of donating one or more H+
B) causes an increase in the concentration of H+ in aqueous solutions
C) can accept a pair of electrons to form a coordinate covalent bond
D) reacts with the solvent to form the cation formed by autoionization of that solvent
E) tastes bitter
Question 3
The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is ________.
A) H+ (aq) + HNO3 (aq) + 2OH- (aq) 2H2O (l) + NO3- (aq)
B) HNO3 (aq) + NaOH (aq) NaNO3 (aq) + H2O (l)
C) H+ (aq) + OH- (aq) H2O (l)
D) HNO3 (aq) + OH- (aq) NO3- (aq) + H2O (l)
E) H+ (aq) + Na+ (aq) + OH- (aq) H2O (l) + Na+ (aq)
Question 4
The element chlorine is in a group known as the _______.
A) transition metals
B) noble gases
C) alkali metals
D) alkaline earth metals
E) halogens
Simple transposable elements and their mechanism of transposition
Comparative sizes of the Earth and the Moon
Solar EM Radiation Penetration into Earth's Atmosphere
Earth’s orientation
Earth Present
Earth day kids