Atoms
Periodic Table
Cha - Cha Changes
What the Matter?
I think, I know them???
Random
100
What particles are located in the center of an atom?
Protons and Nuetrons
100
How many elements are on the periodic table?
118
100
Cutting paper is an example of a chemical of physical change?
Physical Change
100
Does light have matter?
No. It does not have matter.
100
Who created the first model of an atom?
John Dalton
100
How many elements did the first periodic table have?
55 elements
200
To change the an atom of a specific element you MUST change the number of________________.
Protons
200
How many protons does Sodium have?
11 Protons
200
This type of change in state is water to a gas (when water is boiling).
Vaporization
200
What is matter?
Anything that has mass and takes up space.
200
Who created the first periodic table?
Dimitri Mendeleev
200
What is the Atomic Mass? (What makes up the Atomic mass).
Atomic Mass: The number of protons and neutrons in an atom
300
Draw an atom (include the major parts).
Label all the parts.
300
What type of element is silicon?
Metaloid
300
What type of change is "leaves turning brown, and falling off the tree"
Chemical because those are dead leaves
300
Density can be defined as......
The amount of stuff something has.
300
What did Ernest Thompson do in 1911?
(Hint: think of a thin sheet of gold)
He discovered atoms are mostly empty space.
300
What are four characteristics of a metal?
•Are silver-grey in color
•Are solids @ room temperature, except for Mercury
•Reflect light when polished (luster)
•Have high melting and boiling points
•Are attracted to a magnet
400
What is happening at lines A and B?
Matter is changing states
400
What are four characteristics of a metalloid?
•Are generally solids
•Can be shiny or dull (luster)
•May or may not be hammered flat (malleable)
•May or may not be drawn into wire (ductile)
•May or may not be brittle
•Conduct heat and electricity better than nonmetals, but not as well as metals
400
Give an example of a solid, liquid, gas, and plasma
Ice, Water, Water Vapor, The sun
400
What are the five signs of a chemical change?
Bubbles
Odor
Color Change
Change in temperature
Formation of a precipitate (Condensation)
400
Who discovered Electrons in 1897?
JJ. Thompson
400
If I have a atom with 24 protons, 24 neutrons, and 24 electrons what is the charge?
0
500
If an atom has a charge of -2, and 84 electrons. What element is that atom?
What is Lead (Pb)
500
What rules are there about an element tile on the Perodic Table?
The atomic number cannot be larger than the atomic mass.
The chemical symbol can not have two capital letters in it.
500
Define Sublimation
Solid ---> Gas
500
What are four characteristics of a non metal?
Exist as solids, liquids, or gases @ room temperature
•Do not reflect light well (no luster)
•Are brittle
•Cannot be hammered flat (not malleable)
•Cannot be drawn into a wire (not ductile)
•Are soft and bend or break easily (low tensile strength)
500
Who discover Neutrons in 1932?
James Chadwick
500
If an atom has 5 electrons and a charge of -1. How many protons does it have?
4 Protons