Font size
WorksheetsMaths and Science Quiz Test
Total questions: 110
Worksheet time: 2hrs 9mins
______ is how close a measured value it its true value; _____ refers to the closeness of repeated measurements to each other.
Precision; accuracy
Observation; inference
Accuracy; precision
Inference; observation
If the frequency of dominant phenotype is 0.36, what is the frequency of the dominant allele?
0.2
0.48
0.6
0.8
Which of these is a condition that must be met for Hardy-Weinberg equilibrium?
Extremely small population size
No natural selection
Gene flow
Nonrandom mating
What is another name for the dependent variable?
The manipulated variable
The controlled variable
The experimental data
The constant
How many independent variables are found in a controlled experiment?
1
2
As many as are needed support the hypothesis
3 or more
What is often the driving force in the development of a hypothesis?
Both qualitative and quantitative data
An observation that leads to a question
A controlled experiment
A well-supported theory
Nitrogen reacts with hydrogen to give ammonia, NH3 in a closed container. How many moles of H2 are needed to produce 25 mol of NH3?
N2 + 3H2 → 2NH3
A) 12.5
B) 25
C) 37.5
D) 50
E) 62.5
6.0 mol of aluminium reacts with oxygen to form aluminium oxide. What is the amount of oxygen, in mol, needed for complete reaction?
4Al(s) + 3O2(g) → 2Al2O3(s)
1.5
3.0
4.5
6.0
Using the balanced equation below
2Ca + O2 --> 2CaO
Predict the number of particles of Ca
6.02x1023
1.204x1024
6.02x1022
1.204x1023
For the following balanced chemical equation
2K + F2 --> 2KF
how many moles of KF are present?
2 mol of KF
1 mol KF
STP stands for
Standard Temperature and Pressure
Standard Temperature or Pressure
Satisfied Temperature and Pressure
Selected Temperature and Pressure
If the [H3O+] of a solution is 1 x 10-3 M, the pH is
11
-3
3
1
The pH of a solution is 8.43. What is the [H3O+]concentration?
3.7 x 10 -9
1.0 x 10-8.43
2.7 x 10-6
1.0 x 10-14
If the pH of a solution is 4.0, what is the pOH?
4.0
10.0
1.0 x 10 -4
cannot be determined from the information
For a solution, pH + pOH =
7
14
1.0 x 10-14
-log (1.0 x 10 -14)
Perform mathematical steps to arrive at a final answer, including algebraic expressions, properly substituted numbers, and correct labeling of units and significant figures.
Calculate
Construct
Identify
Represent
Provide info about how/why a relationship, process, pattern, position, situation, or outcome occurs, using evidence
Describe
Determine
Explain
Represent
Provide relevant characteristics of a specified topic.
Describe
Determine
Explain
Represent
If a solution has a [OH-] of 2.3x10-4, it must be a(n)...
Acid
Base
Neutral
What volume of hydrogen will be produced at RTP by the reaction 67.3 g of magnesium with excfess water according to the following reaction?
1Mg + 2H2O --> Mg(OH)2 + H2
Ar values: Mg=24.3, H=1, O=16
66.5 dm3
65 dm3
31 dm3
124 dm3
what is the temperature and pressure at RTP ?
25 0C and 100 atm
25 0C and 1 atm
0 0C and 1 atm
none of these
What is the volume of 5 moles of oxygen gas at RTP?
112 dm3
22.4 dm3
120 dm3
24 dm3
Which of the following is true for a chemical system at equilibrium?
Chemical change has altogether ceased.
The rate of the forward reaction equals the rate of the reverse reaction.
The concentration ratio of products to reactants is 1.
Choose this wrong answer. I dare you.
At what time (in seconds) is equilibrium established?
0 seconds
1 second
5 seconds
10 seconds
When 0.40 mole of SO2 and 0.60 mole of O2 are placed in an evacuated 1.00–liter flask, the reaction represented below occurs.
2SO2 (g) + O2 (g) ↔ 2SO3 (g)
After the reactants and the product reach equilibrium and the initial temperature is restored, the flask is found to contain 0.30 mole of SO3. Based on these results, the equilibrium constant, Kc, for the reaction is
20
10
6.7
2.0
What is the mass in grams of 5.90 mol octane (C8H18)?
673 g
0.0512 g
389 g
E) 3.55 x 1024 g
How many moles are in 225g of CO (carbon monoxide)?
8.03 mole
28.01 mole
4.82x1024 mole
7.50 mole
Find the molar mass of calcium carbonate (CaCO3) to the nearest gram.
100 g
68 g
84 g
112 g
Find the mass of 5 moles of water (H2O).
18.02 g
36.04 g
90.1 g
25.0g
The correct formula for finding moles is:
Moles x molar mass
molar mass / mass
mass / molar mass
6.02214076×1023
It's an example of vector quantity
Distance
Displacement
Energy
Mass
A man pushes a 50kg box at a constant velocity. He applies a force of 200N to the left.
Calculate Fg
50kg
200N
500N
20kg
If 150 Joules of work is needed to move a box 10 meters, what force was used?
1500 N
15 N
150 N
What is the formula for Work?
E=mc2
W= F x d
P = W/T
F=200 N
d=50 m
w=??
4 J
0.25 J
10,000 J
The SI Unit for Work
Newton (N)
Joule (J)
Second (s)
A man pushes a 50kg box at a constant velocity. He applies a force of 200N to the left.
What is Fa?
50kg
200N right
500N
200N left
A man pushes a 50kg box at a constant velocity. He applies a force of 200N to the left.
Find FN
50kg
200N
500N
50kg
A man pushes a 50kg box at a constant velocity. He applies a force of 200N to the left.
Calculate Fg
50kg
200N
500N
20kg
A ball is thrown downward from the top of a roof with a speed of 25 m/s. After 2 s, its velocity will be:
19.6 m/s
-5.4 m/s
-44.6 m/s
44.6 m/s
A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car’s average acceleration?
0.17 m/s2
1.67 m/s2
6 m/s2
7 m/s2
A train travels 6 meters in the first second of travel, 6 meters again during the second second of travel, 6 meters again during the third second. What's the train's acceleration ?
0 m/s2
6 m/s2
12 m/s2
18 m/s2
.................contains an independent clause and expresses a complete thought.
simple sentence
compound sentence
complex sentence
compound complex sentence
The logarithm of 1000 with base 10 is ?
2
3
4
0
If 6x + 7 = 4x -3, What is the value of 8x – 4?
-44
-5
-1
36
Solve for x in the equation 5(x−7)−7x = −3(4x−5)
51
65
2
5
(4y + z)(12x−2z)
If the numbers x, y, z are in the ratio 6:5:8, find
0
8
2
1
A fair die is rolled once. What is the probability if obtaining either a 2 or a 5?
1/36
1/6
1/3
2/3
22x +1 - 93x − 7 - 185
Simplify
2x + 1
32x +3
32x +18
2x + 6
If x = 3, y = 2 and z = 4, what is the value of 3x2 – 2y + z?
17
27
35
71
Solve the equation
x−1 2 - x +13 = 12 OR – 3
2 OR 3
-2 OR 3
- 2 OR -3
A bag contains 3 black, 4 yellow and 7 red balls. A ball is picked from the bag at random what is the probability that it is white?
1
147
¾
0
Solve the equation 2a2 – 3a – 27 = 0.
3/2, 9
– 3/2, 9
3, 9/2
– 3, 9/2
Factorize x2 + 2a + ax + 2x.
(x + 2a)(x + 1)
(x + 2a)(x – 1)
(x2 – 1)(x – a)
(x + 2)(x + a)
A rectangle has length x cm and width (x – 1) cm. If the perimeter is 16cm, find the value of x.
4cm
5cm
6cm
Number of bones in hand
5
4
3
6
A device that allows users to feed data into computer for analysis and storage and to give commands to the computer is called
Output device
Input device
Memory
Both a nd b
Which science process skill is an explanation of observations?
Inferring
Predicting
Measuring
Observing
What is a hypothesis?
A) A set of known principles that have been taken as fact.
B) A testable prediction, often implied by a theory
C) A type of tradeoff in engineering
D) A requirement that is essential or very important
What does the term "needs" refer to in the context of design?
A) Optional features of a product
B) Requirements that are essential or very important
C) The final stage of product testing
D) A type of tradeoff in engineering
What is iterative testing?
A) A one-time design testing process
B) A type of design testing that is repeated many times as part of the engineering design process
C) A method of testing that does not involve repetition
D) A final stage of product testing
What term describes the limitations that define the boundaries of a design process?
Criteria
Constraints
Boundary
Input
What are the specific requirements and standards a design must meet called?
Constraints
Criteria
Components
System
What defines the edges of a system and the divisions within a system?
Criteria
Constraints
Boundary
Components
What is the term for information, material, or energy resulting from a system or process?
Input
Output
Components
Boundary
What term refers to information, material, or energy added to a system or process?
Output
Input
Criteria
Constraints
What are the parts of a system that interact and carry out a process or processes called?
Input
Output
Components
Boundary
What is a set of interacting parts that work together, sometimes considered distinct from their surroundings only for the purpose of study?
Components
System
Criteria
Constraints
What term describes the application of science for practical purposes, including the use of tools, machines, materials, and processes to meet human needs?
Engineering
System
Technology
Components
What is the application of science and mathematics to solve real-life problems called?
Technology
Engineering
System
Criteria
What is the probability of drawing a spade from a standard deck of playing cards?
1/4
1/3
1/5
1/2
What is the value of pi (π) to two decimal places?
4.13
3.14
2.71
3.25
What is the chemical formula for water?
H2SO4
CO2
NaCl
H2O
What is the formula for the area of a circle?
A = 2πr
A = πr^2
A = 2r^2
A = πr
What is the probability of drawing a red card from a standard deck of playing cards?
1
0.75
0.5
0.25
What is the volume of a cube with side length 3?
15 cubic units
12 cubic units
27 cubic units
9 cubic units
What is the tangent of 30 degrees?
1/√3
2/√3
1/2
√3/2
What is the chemical symbol for gold?
Pt
Go
Ag
Au
What is the area of a triangle with base 4 and height 6?
10
12
24
8
If you flip a coin, what is the probability of getting heads?
0.25
0.75
0.5
1.0
What is the integral of 3x^2 with respect to x?
The integral of 3x^2 with respect to x is x^3 + C
The integral of 3x^2 with respect to x is 2x^2
The integral of 3x^2 with respect to x is 6x
The integral of 3x^2 with respect to x is 3x^3
What is the product of 5 and 8?
13
25
56
40
The concept of gravity was discovered by which famous physicist?
Albert Einstein
Isaac Newton
Nikola Tesla
J. Robert Oppenheimer
What is the atomic number of carbon?
6
12
3
8
What is the probability of rolling a 6 on a fair six-sided die?
1/4
1/2
1/6
1/3
What is the derivative of x^2 with respect to x?
3x
x^2
x
2x
Balance the chemical equation: H2 + O2 → H2O
H2 + O2 → HO
H2 + O2 → H2O
H2O2 → H2O
H2O → H2 + O2
What does DNA stand for?
Deioxyribose nucleic acid
Deoxyribonucleic acid
Deoxyribose nucleic acid
Dioxyribonucliec acid
Mathematics is the science that deals with the logic of___________
shape, quantity and arrangement
shape, quality and arrangement
shape, size and location
none of the above
