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Explore The KitsProperties of Elements
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Properties of Elements
What you will learn from this videoWhat you will learn
- Elements are pure substance made of only 1 type of atom.
- Each element has properties that can be used to identify it.
- All elements are arranged in rows and columns on the periodic table.
- Discussion Questions
Before Video
What makes a substance different from an element? ANSWERSubstances are made from different types of atoms. Elements are made of the same types of atoms.
An atom is the basic unit of matter.
Atoms are made of protons that have a positive charge, neutrons that have no charge, and electrons that have a negative charge.
Protons and neutrons are found in the center, called the nucleus. Electrons are found orbiting around the nucleus in areas called energy levels.
Gold, silver, titanium.
Salt is made of sodium and chlorine. Sugar is made of carbon, hydrogen, and oxygen.
After Video
What is an element?ANSWERElements are pure substances that are made of only one type of atom.
magnetism, conductivity, melting point
There are 7 rows of the periodic table called periods. The number of each period indicates the number of electron energy levels that are positioned outside the nucleus.
Fluorine can be found in toothpaste and drinking water. Rechargeable batteries in phones and computers are made of lithium.
Elements with similar properties will react with other elements of different properties. The position of an element on the periodic table can help to predict how elements will react with others.
Noble gases are elements in column 18 of the periodic table of elements that share similar properties. They rarely react with anything, but when you pass electricity through them, they glow.
- Vocabulary
- Element DEFINE
Pure substances made of only one type of atom.
- Atom DEFINE
The basic unit of matter made up of protons, neutrons, and electrons.
- Properties DEFINE
Characteristics of elements that help to identify what they are.
- Period DEFINE
Repeating rows of the periodic table that demonstrate patterns of how elements are arranged.
- Group DEFINE
Elements arranged in vertical columns of the periodic table that share the same properties.
- Atomic symbol DEFINE
An abbreviation for the name of an element on the periodic table.
- Atomic number DEFINE
The number of protons in the nucleus of each element.
- Atomic mass DEFINE
The average mass of the nucleus of that element.
- Metals DEFINE
Elements that are good conductors of electricity and thermal energy and are often solid at room temperature.
- Element DEFINE
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