Parts of an Atom
Periodic Table Vocab.
Periodic Table Vocab cont.
Properties of Elements
Bonus Facts
100
A series of models and theories that grew from new evidence.
What is the atomic theory?
100
A series of models and theories that grew as new evidence was collected.
What is the atomic theory?
100
Atomic number, chemical symbol, name, and atomic mass.
What are on the element's square on the periodic table?
100
The amount that material can be hammered or rolled into flat sheets or other shapes.
What is the property malleability?
100
The metals in group one the react by losing one electron. They are never found as uncombined elements in nature.
What are the alkali metals?
200
The smallest particle of an element. Made of protons, electrons, and neutrons.
What is an atom?
200
Specific amount of energy (for electrons).
What is an energy level?
200
Average mass of all isotopes of an element.
What is the atomic mass?
200
The amount that a material can be pulled out or drawn, into a long wire.
What is the property ductility?
200
Group 2 of the periodic table. They react by losing two electrons. They are more reactive than other metals. Never found as uncombined in nature.
What are the alkaline earth metals?
300
A negatively charged particle.
What is an electron?
300
The number of protons in an atom's nucleus.
What is the atomic number?
300
Periods.
What are the horizontal rows on the periodic table?
300
The ability of an object to transfer heat.
What is the property thermal conductivity?
300
Elements in group 3-12. Most are hard and shiny. Less reactive than those in group 1-2, but are still found uncombined in nature.
What are the transition metals?
400
A positively charged particle.
What is a proton?
400
Sum of protons and neutrons in the nucleus of an atom.
What is what is a mass number?
400
They are groups, but are sometimes called families.
What are the vertical columns of the periodic table?
400
The ease and speed with which a substance reacts with other substances.
What is reactivity?
400
Scientists make them by forcing nuclear particles to crash into one another. They can also use particle accelerators.
How do scientists make synthetic elements?
500
A particle with no electrical charge.
What is a neutron?
500
Atoms of the same element that have different numbers o neutrons.
What are isotopes?
500
The arrangement of elements showing the repeating pattern of their properties.
What is the periodic table?
500
The gradual wearing away of metal.
What is corrosion?
500
Semimetals.
What are elements that have properties of metals and nonmetals?
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