TNCC CHEMISTRY 101
PRACTICE TEST 1 (ch 1.2)
NAME: ________________
Q.1 What is Chemistry?
Q.2 Name an areas with example (involving chemistry) playing important role in your life.
Area
example
___________________________
________________________
Q.3 What are the steps that scientists use to solve a scientific problem.
Q.4 Quantitative Measurement must have Number and ____________
Express following in scientific notation
Q.5 1870000
_____________
Q.6
0.00003007
_____________
Q.7 The measurement 4.3 x 103 g also could be written as
a. 4.3g b. 4.3 mg c. 430 g d. 4300 g
How many significant figures are in the number in following
Q.8 12.3004
_________
Q.12 1.20 x 103 _________
Q.9 How many significant figure should there be in the answer when you divide 4.1 by 7.464
ANSWER ___________
Write the name and symbol of SI units of following
Name
symbol
Q.10 Mass
_______
_____
Q.11 Volume
________
______
Q.12 Length
________
______
Q.13 Heat energy
________
______
Q.14 Temperature
________
______
Q.15 Which one is highest value of following prefix?
a. mili b. kilo c. centi
d. deci
Q.16 The number 4.89 rounded to two significant figures is
a. 4.90 b. 5.0 c. 5 d. 4.9 e. 4.8
Q.17 Convert 761miles to kilometer, 1 m = 1.094 yd and 1 mile = 1760 yd.
a. 4.70 x 10-4 km b. 1470 Km c. 832 Km d. 696 Km e. 1220 Km
Q18 Convert 623qt to mL where 1 L = 1.060 qt and 1 L = 1000 mL
Q.19 Covert 23.2 oC to _____oF
Q.20 Convert 801 K to _____oC
Q.21 Density is an example of a chemical property
True or False?
Q.22 Find the volume of an object that has a density 3.14 g/mL and mass of 93.5 g.
Q.23 A graduated cylinder contains 20 mL of water. An object is placed in the cylinder and the water level
rises to the 31.2 mL mark. If the object has a mass of 47.9 g, what is the density of that object?
Name an appropriate method to measure the density of following objects
Q.24 A piece of copper wire ____
Q.25 a bottle of oil ___
a. densitometry b. geometric formula
c. water displacement technique
d. hydrometer
Q.26 The state of matter for an object that has a definite volume but not a definite shape is
a. solid
b. liquid
c. gas
d. mixed
Q.27 Anything has mass and volume is
a. solid
b. liquid
c. gas
d. element
e. matter
Classify each of the following as a physical (P) or a chemical (C) change (Q34- 39)
Q.28 Cooking an egg ______
Q.29 Burning gasoline _____
Q.34 boiling water ______
Q.38 grinding grain _____
Q.31 Which of the following describe a chemical property of gold?
a. gold is a yellow metal b. gold is an inert (nonreactive) metal
c. gold is a soft metal
d. gold is a very dense metal
Classify each of the following as an element (E) or a compound (C) or a homogeneous mixture (M) or a
heterogeneous mixture (H)
Q.32 distilled water ____
Q.33 Helium gas _______
Q.35 CO2 gas _____ Q.36 sea water ______
Q.34 NaCl (salt) ______
Q.37 AIR ______
Q.38 Granite stone ______
Q.39 Which one has more energy?
a glass of water with 80oC
b. a bucket of water with 60 oC
Q,40 What type of bond is holding NaCl ________
a. ionic b. Hydrogen bonding c. covalent d. none of these
Q.41 Write symbol of following elements
Bromine ______
Sodium ______
Silver______ Helium ______ Lead ______
Q.42 Name following elements
Ni _____________ Li ______________ Ba _____________
Hg____________
Q.43 Name the most abundant element in the
Human Body _______ and the Earth’s Crust ____________
Chapter 2
Q. 1 How many protons, electrons and neutrons respectively, do following atoms have?
p
e
n
127
I
____ _____ _______
Q.4 An atom with 15 protons and 16 neutrons is
a. P
b. Ga
c. S
d. Pd
e. Rh
Q.5 Identify each of the following
Nobel gas _____
a. H
Transitional metal ________
b. Cl
c. Na
Halogen _______ Alkaline earth metal ________
d. Ca
e. Fe
Q.6 Classify each of the following
Metal _______
a. As
Nonmetal ___________
b. Ar
c. Ca
Metalloids ___________
d. Pu
Q.7 Which of the following elements is most similar to Cl ?
a. H
b. He
c. Na
d. Hg
e. Br
Q.8 Name all subatomic particles of atom with their symbol and charge
name
symbol
charge
Q.714 fill up the blank
Orbital
shape
how
many type
no. of electron
in each orbital
total no. of
electron in a orbital
s
____________
______________
_________
_________
p
____________
______________
_________
_________
d
____________
_______________
_________
__________
f
____________ _________________
_________
__________
Write electron configuration and Draw orbital diagram of following
Q.15
Q.16
Na
I-
Q.17 Draw Lewis dot symbol of
Cl
Mg