Name _________________________ Class ______ Date _________ 1 TEKS Grade 6 Lesson 6.6A TEKS 6.6A Compare metals, nonmetals, and metalloids using physical properties such as luster, conductivity, and malleability. TEKS Lesson 6.6A: Metals, Nonmetals, and Metalloids How Are Elements Classified? All matter is made up of the atoms of different elements. There are more than 100 known elements found in nature. Each element has certain physical and chemical properties. Physical and Chemical Properties A physical property is a characteristic of a substance that can be observed without changing the substance into another substance. Color, hardness, and shine are physical properties. Another term for shine is luster. Luster is the way a substance reflects light. Whether an element is a solid, liquid, or gas is also a physical property under certain conditions. For example, the temperature at which a solid melts is a physical property. The element gold melts at a temperature of 1,064 degrees Celsius. An element’s chemical properties determine how the element combines with other elements to form compounds. For example, when magnesium burns, it combines with oxygen in the air. A new compound forms, called magnesium oxide. Burning is one type of chemical property. Other examples of chemical properties are tarnishing and rusting. The Periodic Table Some elements share similar physical and chemical properties. Elements fall into three large groups based on these properties. The periodic table is an arrangement of the elements that organizes information about the elements and their properties. Look at the periodic table at the end of this lesson. Elements on the left side of table are metals. Elements on the right side of the table are nonmetals. Along each side of the zig-zag line between the metals and nonmetals are the metalloids. In this lesson, you will learn about the physical properties of elements in these groups. 1. Define What is a physical property? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________
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TEKS Lesson 6.6A: Metals, Nonmetals, and Metalloids · TEKS Grade 6 Lesson 6.6A TEKS 6.6A Compare metals, nonmetals, and metalloids using physical properties such as luster, conductivity,
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Name _________________________ Class ______ Date _________
1
TEKS Grade 6
Lesson 6.6A
TEKS 6.6A Compare metals, nonmetals, and metalloids using
physical properties such as luster, conductivity, and malleability.
TEKS Lesson 6.6A: Metals, Nonmetals, and Metalloids
How Are Elements Classified? All matter is made up of the atoms of different elements. There are more than 100 known
elements found in nature. Each element has certain physical and chemical properties.
Physical and Chemical Properties A physical property is a characteristic of a
substance that can be observed without changing the substance into another substance.
Color, hardness, and shine are physical properties. Another term for shine is luster.
Luster is the way a substance reflects light. Whether an element is a solid, liquid, or gas is
also a physical property under certain conditions. For example, the temperature at which
a solid melts is a physical property. The element gold melts at a temperature of 1,064
degrees Celsius.
An element’s chemical properties determine how the element combines with other
elements to form compounds. For example, when magnesium burns, it combines with
oxygen in the air. A new compound forms, called magnesium oxide. Burning is one type
of chemical property. Other examples of chemical properties are tarnishing and rusting.
The Periodic Table Some elements share similar physical and chemical properties.
Elements fall into three large groups based on these properties. The periodic table is an
arrangement of the elements that organizes information about the elements and their
properties. Look at the periodic table at the end of this lesson. Elements on the left side of
table are metals. Elements on the right side of the table are nonmetals. Along each side of
the zig-zag line between the metals and nonmetals are the metalloids. In this lesson, you
will learn about the physical properties of elements in these groups.