Physical Science A unit 2 – Flashcards
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An element's properties can be predicted from its
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Location in the periodic table
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In the ____ state of matter, electrons are stripped away from the nuclei
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Plasma
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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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The sun and many other stars are made mostly of the element
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Hydrogen
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A __ is a positively charged particle in an atom's nucleus
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Proton
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Which of the following is NOT a characteristic of most metals
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Brittle
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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 ___ Has some of the properties of both metals and nonmetals
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Metalloid
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When two identical nonmetal are bonded together the result is a
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Diatomic
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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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Nonmetals are good conductors of heat and electricity
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True
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From left to right in the periodic table the elements are arranged in order of decreasing atomic mass
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False Increasing
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The mass of a proton is about one atomic mass unit
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True
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The reactivity of the metals elements generally increases as you move from left to right across the periodic table
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False Decreases
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Atomic mass
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average mass of one atom of an element
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Atomic number
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the number of protons in the nucleus of an atom
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Proton
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A small positively-change particle in the nucleus of the atom
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valence electron
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Involved in transfer/sharing of electons
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Organic compound
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A compound that contains carbon
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Malleable
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A term used to describe material that can be hammered or rolled into shape
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Ductile
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a term used to describe a material that can be pulled out into a long wire
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Alkali Metal
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an element in group 1 of the most reactive group
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Hydroxyl Group
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An ch group found in alcohols
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Metalloid
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An element that has some of the characteristics of metals and some of the characteristics of nonmetals
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Diatomic Molecule
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A molecule composed of two atoms of the same element
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Plasma
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a state of matter in which atoms are stripped of their electrons and the nuclei packed closely together
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What kind of information can you learn about an element from the periodic table
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You can find the chemical symbol the atomic number and name, atomic mass
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How are the elements arranged in the periodic table
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Increases in the atomic number
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Explain the characteristics of metal
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Hardness,Shininess, Malleability and ducteity
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What is the most common element in stars
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Hydrogen
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Give examples of pure carbon
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Graphite, Diamonds, And fullerene
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Explain what hydrocarbons and substituted hydrocarbons are
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Include alcohol, hydrogen, compounds, organic acids
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What distinguishing characteristic is common in the names of saturated hydrocarbons
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The suffix is common in the name of saturated hydrocarbons _ane
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Monomers of complex carbs
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Simple sugars
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Carbs
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Carbon, hydrogen, Oxygen
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Polymers
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Carbs , Lipids , Proteins
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Monomers
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Sugars, fats , oils , amino acids , fatty acids
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What is the core of an atom
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protons or neutrons
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What is the mass of a proton
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1.6726219 × 10-27 kilograms
