Show:
Section 1
Section 2
Section 3
Section 4
Section 5
100
The smallest perticle of an element.
What is an atom?
100
An arrangement of elements showing the repeating pattern of their properties.
What is the Periodic Table of Elements?
100
Elements that are good conductors of electric current and heat.
What is metal?
100
Substances that can conduct electric current under some condition.
What is semiconductors?
100
The atomic nuclei of unstable isotopes release fast-moving particles and energy.
What is radioactive decay?
200
Tiny nucleus and moving electrons surrounds atom's region.
What is at the center of the atom and what surrounds the atom.
200
Atomic number chemical symbol, name, and atomic mass.
What is in each element square in the periodic table?
200
Water, malleability ductility, and conductivity.
What is the physical properties of metal?
200
Nonmetals are poor conductors of electric and heat,and are are dull and brittle
What are the properties of nonmetals?
200
Alpha particles, beta particles, and gamma rays is produced in the process.
What can radioactive decay produce?
300
J.J Thomson had discovered that amazing fact about atoms.
Who discovered that atoms contain negatively charged particles?
300
The first periodic table was published in 1869.
Mendeleev published his periodic in what year?
300
Lithium can be used in certain products.
What element is used in batteries and certain medicines?
300
Chlorine kills small amount of bacteria.
Chlorine is used to kill small groups of what?
300
Becquerel discovered something on the photographic plate.
Who discovered an image of mineral on the photographic plate.
400
The process when certain kinds of bacteria use nitrogen to from compounds caned.
What is nitrogen fixation?
400
A scientific model showed that electrons would only have specific amounts of energy leading them to move in certain orbits.
What is Bohr's model?
400
He wrote each element, melting point, and color on individual cards.
What were a few things Mendeleev did to help find a pattern within elements?
400
Luster, malleability, ductility, and contductivity.
What do the properties of metals include?
400
They detected medical issues and treat some diseases.
What are radioactive isotopes used for in medical facilities?
500
The total mass makes 1 proton.
2,000 electrons makes up the mass of how many protons?
500
In 1869, Mendeleev published the start of new tables of elements.
What year was the first periodic table published in?
500
There over 100 elements included in this periodic table.
Who many elements does the modern periodic table include today?
500
(Fe) is located in Group 8, Period 4 of the Periodic Table of Elements.
Where is Iron (Fe) located in the periodic table.
500
One proton and one electron is included in this element.
How many protons and electrons does hydrogen have?