Atoms
Periodic Table
More Atoms
Periodic Table 2
Examples of ?
100
The smallest part of an element that still has properties of that element.
What is an atom?
100
Usually shiny, can be bent or stretched and conducts electricity.
What is metal?
100
A pure substance that is made of 2 or more elements
What is a compound?
100
He developed a way to arrange and classify elements.
Who is Dimitri Mendeleyev?
100
This gas glows in signs made out of tubes of glass.
What is neon?
200
The structure at the center of an atom.
What is the nucleus?
200
An abbreviation of the elements name.
What is the chemical symbol?
200
A substance that cannot be broken apart into other substances.
What is an element?
200
Air, earth, fire and water.
What are the ancient Greek elements?
200
Some metals are found in food and your body. This metal helps keep your bones healthy and you can find it in milk.
What is calcium?
300
The small positively charged particle in an atom.
What is a proton?
300
Metal that is like metal in some ways and like non-metal in other ways.
What is a semi-metal?
300
Every living thing needs this element as well as graphite, coal and diamonds.
What is carbon?
300
The number that tells how many protons an atom has.
What is the atomic number?
300
This semi-metal keeps computers running.
What is silicon?
400
The negatively charged particle in an atom.
What is an electron?
400
The number that appears above the chemical symbol in the Periodic Table.
What is the atomic number?
400
This is a powerful electron microscope that can show atoms.
What is a scanning tunneling microscope?
400
Elements are shown arranged by their properties in this chart.
What is the Periodic Table?
400
The earth's crust contains 46% of this element.
What is oxygen?
500
The particle in an atom that lacks a charge.
What is a neutron?
500
Metal that is dull in color, does not conduct electricity, does not stretch or bend and breaks easily.
What is a non-metal?
500
An element that hardly ever combines with other elements to form a compound.
What is a noble gas?
500
Many non-metals are these.
What are gases?
500
Living things contain carbon in this percentage.
What is 18%?
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