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Chemistry
Physics
Biology
Physical Science
Math Riddles
100
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
What is an Ion?
100
The SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one meter in the direction of action of the force.
What is a Joule?
100
The smallest structural and functional unit of an organism.
What is a Cell?
100
The smallest element that maintains the property of that element.
What is an Atom?
100
1. I am a two digit number


2. My tens digit is a multiple of my ones digit.

3. The sum of my digits is 9.

What is 63?
200
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodine are all considered these types of molecules.
What are Diatomic Molecules?
200
A quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.
What is a Vector?
200
This branch of science is concerned with the classification of organisms.
What is Taxonomy?
200
A substance that cannot be broken down into simpler substances.
What is an Element?
200
1. I am a 3 digit number.


2. I am an odd number.

3. All my digits are the same.

4. The product of my digits are 27.

What is 333?
300
This is the year that the first Periodic Table of the Elements was made.
What is 1869?
300
The spontaneous decomposition of an unstable atomic nucleus into a more stable form, in one of three decays: alpha, beta, gamma.
What is Radioactivity?
300
A change of the DNA in an organism that results in a new trait.
What is Mutation?
300
An element or a compound is always considered to be this type of substance.
What is a Pure Substance?
300
1. I am a 4 digit number.


2.  My ones digit is a 4.

3. My thousands digit is twice the value of the ones digit.

4. My hundreds digit is one less than the thousands digit.

5. The sum of my digits is 25.

What is 8764?
400
This man is credited with the creation of the modern Periodic Table.
What is Mendeleev?
400
The rate of change of momentum of a body falling freely under gravity is equal to its ______.
What is Weight?
400
The pairs of chromosomes that are in a single human DNA
what is 23 pairs?
400
During this change of state, solids become gas.
What is Sublimation?
400
1. I am a four digit number.


2. My thousands digit is even and is a multiple of 3.

3. My ones digit is an even number and 1 less than my tens digit.

4. My hundreds digit is three more than my thousand's digit.

5. My tens digit is equal to my hundreds digit.

What is 6998?
500
In 1649, Hennig Brand discovered this first element that would later be apart of the Periodic Table of the Elements.
What is Phosphorus?
500
What speed of sound must a vehicle exceed before it can break the sound barrier?
What is 660 mph?
500
This organelle in a typical cell provides the function of ribosome production.
What is the Nucleolus?
500
An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This is apart of Newton's First Law of Motion which is also considered to be the _____________________.
What is the Law of Inertia?
500
1. I am a 4 digit even number and all of my digits are different.


2. The sum of all my digits is 10.

3. Each of my digits is greater than 0.

4. The sum of the digits in my thousands place and hundred place equals the sum of the digits in my ones place and tens place.

5. My largest digit is in the thousands place.

What is 4132?