Barrons SAT Subject Test Chemistry, 13th Edition

(D) The empirical formula is a representation of the elements in their simplest ratio. Therefore, CH 2 is the simplest ratio of ...

(E) Synthesis reactions contain only one product. This reaction contains two products. Therefore, it can’t be described as a sy ...

(A) In the equation, 2 mol of Na release 822 kJ of heat. If only 0.5 mol of Na is consumed, only one-fourth as much heat will ...

PRACTICE TEST 2 1. (E) A phase diagram shows that all three states can exist at the triple point. ...

(B) When a solid turns into a liquid, the process is called melting. This happens at a particular temperature when the pressure ...

(A) Water boils at 100.0°C under standard pressure (1.00 atmosphere). On the absolute temperature scale, that’s 373 K. ...

(A) When the vapor pressure of a liquid is the same as the atmospheric pressure, bubbles can be created in the body of the liqu ...

(B) The first step is the ΔH for C + O 2 → CO. It releases −110.5kJ of heat. This is written as −110.5 kJ because it is exothe ...

(C) This is the second step on the diagram. It releases −283.0 kJ of heat. ...

(A) To arrive at the ΔH, take the total drop (−393.5 kJ) or add these reactions: ...

(B) Potassium and chlorine have a large enough difference in their electronegativities to form ionic bonds. The respective posi ...

(D) Two atoms of an element that forms a diatomic molecule always have a nonpolar covalent bond between them since the electron ...

(C) Electronegativity differences between 0.5 and 1.7 are usually indicative of polar covalent bonding. CO 2 is an interesting ...

(E) Calcium is a metal and forms a metallic bond between atoms. ...

(E) This graph shows the volume decreasing as the pressure is increased and the temperature is held constant. It is an example ...

(A) This graph shows the pressure increasing as the temperature is increased and the volume is held constant. It is an example ...

(C) This graph shows the volume increasing as the temperature is increased and the pressure is held constant. It is an example ...

(B) The alkali metals react with water to form hydroxides and release hydrogen. A typical reaction is: 2Na(s) + 2H 2 O(ℓ) → 2N ...

(D) The noble gases are the least reactive because of their completed outer orbital. ...

(C) The halogen family contains the colored gases fluorine and chlorine at room temperatures, the reddish liquid bromine, and m ...