A201 Chemistry
Problem 9 Some like it hot, some like it cold
Practice Questions Answers
Name: _
Student ID: _
Class: _
Mark: _out of 17
Team: _
Question 1 (10 marks)
Figure 1 shows the energy changes which occur when A (aq) reacts with B (aq) to form C
(g
A201 Chemistry
Problem 10 Diamonds are Forever
Practice Questions Answers
Name: _
Student ID:_
Class: _ Team: _
Mark: _out of 16
Question 1 (9 marks)
The rate equation for the reaction, P + Q 2R + S, is found to be:
Rate = k [P][Q]2
When [P] = 0.100 M and
A201 Chemistry
Problem 2 Effervescence
Practice Questions Answer
Name: _
Student ID: _
Class: _
Mark: _out of 30
Team: _
There are FOUR compulsory questions in this section. Answer all questions in the spaces
provided. Show your workings and state the uni
A201 Chemistry
Problem 3 Solutions and Dilutions (Practical)
Practice Questions Answer
Name: _
Student ID: _
Class: _
Mark: _out of 20
Team: _
There are THREE compulsory questions in this section. Answer all questions in the spaces
provided. Show your wor
A201 Chemistry
Problem 4 Solution Needed (Practical)
Practice Questions Answers
Name: _
Student ID: _
Class: _
Mark: _out of 20
Team: _
There are THREE compulsory questions in this section. Answer all questions in the spaces
provided. Show your workings a
A201 Chemistry
Problem 8 Dumping Ground
Practice Questions Answers
Name: _
Student ID: _
Class: _
Mark: _out of 13
Team: _
Question 1 (4 marks)
Solution A is a buffer solution which was made by using 0.80M nitrous acid (HNO2) and
0.50M sodium nitrite (NaN
A201 Chemistry
Problem 5 Shapely Molecules?
Practice Questions Answers
Name: _
Student ID: _
Class: _
Mark: _out of 20
Team: _
There are TWO compulsory questions in this section. Answer all questions in the
spaces provided. Show your explanation clearly.
A201 Chemistry
Problem 1 Mendeleevs Table
Practice Questions Answers
Name: _
Student ID: _
Class: _
Mark: _out of 20
Team: _
There are FOUR compulsory questions in this section. Answer all questions in
the spaces provided. Show your workings and state the
A201 Chemistry
Problem 7 Balancing Act
Practice Questions Answer
Name: _
Student ID: _
Class: _
Mark: _out of 20
Team: _
Question 1 (10 marks)
The following changes are made independently to equilibrium mixture below and allowed
to reach a new equilibrium
A201 Chemistry
Problem 11 Batteries
Practice Questions Answers
Name: _
Student ID:_
Class: _ Team: _
Mark: _out of 20
Question 1 (10 marks)
Figure 1 shows a setup of electrochemical cell consisting of two metal strips connected with
a wire and immersed in
A201 Chemistry
Problem 13 Scent-sitivity
Practice Questions Answers
Name: _
Student ID:_
Class: _ Team: _
Mark: _out of 18
Question 1 (4 marks)
From the list of compounds shown in Table 1,
Compound A
Table 1
Compound B
Compound C
Compound D
a) Identify tw
A201 Chemistry
Problem 6 Clean Faces
Practice Questions Answer
Name: _
Student ID: _
Class: _
Mark: _out of 20
Team: _
Question 1 (11 marks)
The chemical formulae of two different molecules, SiH4 and NH3, formed from elements
given in Table 1 with the res
A201 Chemistry
Problem 12 Test Tube Fruits
Practice Questions Answers
Name: _
Student ID:_
Class: _
Mark: _out of 20
Team: _
Question 1 (12 marks)
Give IUPAC name for the following compounds.
(a)
(b)
Answer:3-methyl-1-hexene
( or 3-methylhexene)
Answer:4-
Equation of a Straight Line ( y = mx + c )
x
y
2.1
10
3
4
-6.67
m=
24.00
y-intercept =
3.60
x-intercept =
Hence, y = -6.67 x +24.00
m = gradient, c = y-intercept
Given y = mx + c and
5
m=
( y y1 )
m 2
3
c=
( x 2 x1 )
8
If x =
43
then y =
If 2 lines are pe
P11
Dice and Tosses
6th Presentation
A113 Mathematics
Probability
Probability is the likelihood or chance of an event (E)
occurring, which takes a value in the range of 0 to 1
(inclusive).
For example, the chance of a fair coin falling on its Head
is 0.5
P07
Internet Download
6th Presentation
A113 Mathematics
Download Speed of Internet Data
The download speed can be affected by many
factors such as the type of connection (e.g.
ADSL, cable, optic fiber) and end-user traffics.
The time taken to download a
School of Engineering
A113 UT2 Revision Worksheet
Give your answers in 2 decimal places, where applicable.
Rate of Change
1. A bus travels at a constant speed of 80 km/h for half an hour along a straight
road. Then it stopped for a 20 minutes break and co
School of Engineering
A113 UT1 Revision Worksheet
Algebraic Manipulation
Sequence of Operations
Without using calculator, evaluate the following expressions:
1)
(5 + 4 2) 3
2)
32 + 4 (23 + 32) 100
Algebraic Expressions
Simplify the following expression:
3
P03
Pushcart
6th Presentation
A113 Mathematics
Mathematical modeling
Many real-life situations can be modeled using
mathematical functions, which can be expressed
in terms of graphs or equations.
For example, in todays problem, we modeled
the projected
P02
Getting it Straight
6th Presentation
A113 Mathematics
Visual Examination
In todays problem, the objective of the game is to score
points by connecting as many dots as possible using two
straight lines.
Visual examination is a convenient way to accom
School of Engineering
A113 UT3 Revision Worksheet
Give your answers in 2 decimal places, where applicable.
Probability
Permutation and Combination
1. 8 people (represented by A, B, C, D, E, F, G and H) were arranged in a line.
a) How many different possib
P06
Train Schedule
6th Presentation
A113 Mathematics
Rate of change
The rate of change of a quantity is the change
in the quantity with respect to the time lapsed.
In todays problem, the velocity of the train is the
rate of change of the displacement tr
School of Engineering
A113 Mathematics
Pre-reading for Problem 05: Growing with Time
Question to consider
1. The table below shows the growth in quantity of four types of micro-organisms
over time.
Time
0s
30s
60s
90s
120s
Quantity of Micro-organism A
3
6
P08
Making Sense of Things
6th Presentation
A113 Mathematics
Intuition and probability
Sometimes, our logical mind will play tricks on
us, as things could be counterintuitive.
It is often helpful to perform experiments in order
to gain insights into a p
P13
Mint or Fruity
6th Presentation
A113 Mathematics
A first look at Dennis claims
Different people tend to have different conclusions about the
same issue based on their own experiences.
Hence, any claim made about a population or a situation
could be
P04
Barbecue
6th Presentation
A113 Mathematics
System of Linear Equations
A simple linear equation is defined as
ax = b
where a and b are known and x is an unknown variable
to be solved.
To help us solve todays problem, we can represent the
purchase inf
P14
Salary
6th Presentation
A113 Mathematics
Recap
Mean is the average of a set of numerical values.
Standard deviation
A measure of dispersion of data (how spread out
your data is) from the mean
A smaller standard deviation value will indicate that
m
Answers for A113 UT2 Revision Worksheet
1.
2.
3.
4.
a) 13.33 km
a) 2m/s
a) 50 km/h2
a) 130
1
5. a)
2
6. a) 0
b) 130 km
b) 0 m/s
b) 65 km/h
b) 6050 kb
1
b)
2
2
b)
9
11
105
1
3
7. a)
b)
4
8
8. a) 84.46%
b) 36.3%
9. a) 40%
b) 0.60
g) 0.04
10. a) 200
b) Apple
School of Engineering
A113 Mathematics
Pre-reading for Problem 02: Getting It Straight
Coordinate Geometry
1. Coordinate geometry is a mathematical system of geometry where the points of
points on the plane is described using an ordered pair of numbers. R
School of Engineering
A113 LEO Quiz for P08 worked solutions
1. In a game show, there are 12 colored balls in a bag, evenly divided into blue,
yellow and pink. The contestant is allowed to pick 2 balls from the bag. After the
first ball is picked, the col