Page 91 - Chemistry eBook

(2) 16
(4) 8
properties incre i
e
q o
→
M O O
e n
(a
c e s
c r
oe n
c
c
m 0C
W g
33 Whatisthenetchargeofanionthathas8protons, 9 neutrons, and 10 electrons?
(4) Ele pro
Which replace
(1) Mg (2) 2M (3) Mg (4) Mg
Given reactio
Fe
This r powder iron of t
(1) acts of i (2) abs
iro (3) has pie
(4) is m
The te from 1 418 joul
(1) 1g (2) 10
(1) 1+ (2) 2+
(3) 1− Sample Regents Questions
39
34 Whichelementismalleableandagoodconductor of electricity at STP?
(1) argon (3) iodine (2) carbon (4) silver
35 Which element has chemical properties that are most similar to the chemical properties of
sodium?
(1) beryllium (3) lithium
(2) calcium (4) magnesium
(4) 2−
40
Jan 2011 #34
Choice #4
36 If an element, X, can form an oxide that has the formula X2O3, then element X would most likely be located on the Periodic Table in the same group as
Explanation:
1. Find the symbols of each element on Table S (pp. 10-11).
Answer
Argon: Ar (1) Ba Carbon: C (3) In
Iodine: I (2) CdSilver: Ag (4) Na
2. If an element is malleable and a good conductor, we know that it’s a metal. Which of
37 What is the total mass of KNO that must be these elements is a metal (found on the left side of the 3zigzag)?
41
Ag/silver dissolved in 50. grams of H2O at 60.°C to make a saturated solution?
The other elements are nonmetals (found on the right side of the zigzag).
(1) 32 g (3) 64 g (2) 53 g (4) 106 g
ctronegativ perties decr
balanced e ment reacti
+ 2AgNO3 g + O2 → 2 CO3 → Mg Cl2 + 2AgN
the balanc :
s) + 2HCl(
eaction oc ed iron is us he same ma
as a better on
rbs less en
a greater s e of iron ore metalli
perature o °C to 20°
es of heat.
UNIT 3: PERIODIC TABLE OF ELEMENTS © 91