an elements properties can be predicted form its _______________________
DESCRIPTION
Location on the periodic tableTRANSCRIPT
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An elements properties can be predicted form its _______________________.
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If a substance is ____________, it can be pulled or drawn into a wire.
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Ductile
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A _______________ is a positively charged particle in an atom’s nucleus.
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proton
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True or False•Metals are malleable, ductile, brittle and good conductors.
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False
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An element’s ________________ shows the number of protons in its nucleus.
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Atomic number
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Dmitri Mendelev created the first _____________________.
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Periodic table
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The particles that are involved in the transfer or sharing between atoms are ____________________.
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Valence Electrons
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A(n) _____________________ has some of the properties of both metals and nonmetals.
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Metalloids
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The family of _______________ is the most reactive group of metals in the periodic table.
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Alkali metals
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The ____________ and the ________________ are shown at the bottom of the periodic table in order to keep the table a reasonable size.
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Lanthanides and Actinides
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A mixture of metals is called a(n) __________________.
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Alloy
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True or False•Nonmetals are good conductors of heat and electricity.
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False
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True or False•From left to right on the periodic table, the elements are arranged in order of decreasing atomic mass.
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False
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The mass of a proton is about one atomic mass unit.
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True
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True or False•The reactivity of the metal elements generally increases as you move from left to right across the periodic table.
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False
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What are the pieces of information found in a square on the periodic table?
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Atomic number – Chemical symbol – Name of element – Atomic mass -
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Name my group?•I am a solid that is moderately reactive. I conduct heat and electricity well. Sometimes my metals have unusual colors. What family am I?
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Transition metal
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Name my group?•I am a solid that is highly reactive. I appear silver-white. I conduct heat and electricity well.
•What family am I?
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Alkali Metals
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The sun and many other stars are made mostly of the element __________________.
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Hydrogen
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True or False
Nitrogen nuclei and energy are the products of the nuclear fusion of the sun’s hydrogen.
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False
Helium
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When two identical nonmetal atoms are bonded together, the result is a(n) __________________________.
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Diatomic molecule
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I am a gas at room temperature. I have a greenish-yellow color. I am highly reactive and I have poor conductivity. What family do I belong?
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The Halogen Family
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I am colorless and at room temperature I am a gas. I do not conduct heat or electricity well. I do not react to other elements. What family do I belong?
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The Noble Gas Family