Particle Nature of Matter
What happens to the motion of particles of matter when it is heated?
The motion of particles moves faster.
What happens when matter changes its state?
PHASE CHANGE
Draw the arrangement of particles of gas particles when it continually loses its energy?
_____ --> ______
Gas to Solid (Drawing)
List the three subatomic particles with their symbols
Proton, Electron and Neutron
What is the family name of the element Aluminum?
Basic/Poor Metals
What is the smallest unit of matter that retains the properties of an element?
Atom
What phase change occurs when there is formation of droplets of water on cold glass of water at room temperature?
Condensation
What happens to the kinetic energy of molecules when it is cooled?
When matter is cooled the kinetic energy of its molecules decreases.
Who discovered the protons through his cathode-ray tube experiment?
Ernest Rutherford
Family number of the elements that are colorless, odorless, and tasteless?
Which of the following is a physical property of matter?
A. Boling Point
B. Flammability
C. Both A and B
A
What are the factors that cause the change in state of matter?
Temperature and Pressure
To which family do alkali metals have a greater tendency to form bonds with?
Halogens (having 7 valence electrons)
How to solve the number of neutrons in a neutral atom?
No. of Neutrons = Mass Number - Atomic Number
What family/group of elements contain all radioactive metals?
Actinide series
Order the states of matter in increasing compressibility of the particles of matter.
Solid , Liquid, Gas
What will be the order of the phase change when gas particles lose its energy?
Gas to Liquid to Solid
What happens to the kinetic energy of particles in a matter when it reaches its melting point?
Kinetic Energy INCREASES
How many neutrons are there in a Bi-209?
126 neutrons
List all the elements. symbols that belong to the group of Alkaline Earth Metals
Be, Mg, Ca, Sr, Ba, Ra
What are the four basic aspects of the particles of matter?
State all the phase changes in matter
Melting
Freezing
Evaporation
Condensation
Sublimation
Deposition
How do the characteristics of particles of matter, such as their size and composition, affect the physical and chemical properties of different substances?
A. Both the size and composition of particles can affect both the physical and chemical properties of substances.
B. The size of particles affects the physical properties of substances, but not their chemical properties.
C. The composition of particles affects the chemical properties of substances, but not their physical properties.
D. The size and composition of particles have no effect on the physical or chemical properties of substances.
A. Both the size and composition of particles can affect both the physical and chemical properties of substances.
How many electrons does an Iron cation have?
(Fe3+)
23
Sm
Atomic Number- 62