Unit 3 Lesson 5 Atoms and Elements
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| True or False: Atoms are smaller than electrons. | False
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| __ are the basic building blocks of matter, because they are the smallest particles that can have the same properties as the stuff they make up. | Atoms
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| Tiny atoms contain even smaller particles called ___. | Subatomic particles
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| ___ are subatomic particles that have a positive electric charge. | Protons
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| Protons and neutrons are found in the center of the atom or the ___. | Necleus
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| ___ are subatomic particles that have no charge. | Neutrons
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| A subatomic particle that is found in the nucleus of an atom and has a positive charge is called a ___. | Proton
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| A subatomic particle that is found in the nucleus of an atom and has a negative charge is called a ___. | Neutron
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| Two subatomic particles that are found in the nucleus of an atoms are __ and __. | Protons and Neutrons
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| The protons and neutrons in the nucleus make up most of the ___of an atom. | Mass
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| A third type of subatomic particles that are negatively charged are called ___. | Electrons
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| ___ are negatively charged and are much smaller than protons and neutrons. | Electrons
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| Electrons are found outside the nucleus in a region called the ___. | Electron cloud
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| Atoms are electrically neutral overall because they have the same number of ___as ___. | Protons, Electrons
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| An ___ is a pure substance that is made up of only one type of atom. A sheet of aluminum is an example. | Element
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| Elements can be identified by their ___ and ___. | Atomic numbers and chemical symbols
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| Atoms of one element differ from atoms of another element by the number of ___ they have. | Protons
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| The ___ of an element is the number of protons in the nucleus of one of its atoms. | Atomic number
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| The ___ of elements is used to organize over 110 known elements. | Periodic Table
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| The periodic table is organized in rows by increasing __. | Atomic number
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| Each row of the periodic table is organized by increasing ___. | Atomic number
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| The atomic number of elements is arranged on the periodic table in ___. | Rows
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| The atomic number of each element is listed at the top of that element's square in the ____. | Periodic table
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| The ___ of each element is listed at the top of that element's square in the periodic table of elements. | Atomic number`
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| Each element can also be described by their ___ or abbreviation that represents an element. | Chemical symbol
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| ___symbols of elements are usually one or two letters, the first letter is always capitalized! | Chemical
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| Use your periodic table of elements, what is the chemical symbol for silver? | Ag
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| Use your periodic table of elements, what is the atomic number for silver? | 47
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| The periodic table is arranged into columns and rows. Elements in each column have similar ___. | Properties
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| What are the three main classes of elements on a Periodic Table? | Metals, nonmetals, and metalloids
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| A zigzag line on the periodic table marks the locations of the metals nonmetals and ___. | Metalloids
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| A ___ property is a characteristic of a substance that can be observed and measured without changing the identity of the substance. | Physical
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| Color, density and conductivity are all ___ properties | Physical
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| ___ is a measure of how well a substance transfers energy as heat. | Thermal conductivity
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| ___ also describes how well an electric current flows through a substance. | Conductivity
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| Metals appear to the ___ of the zigzag line. | Left
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| Most metals are ___ and can be recognized by their luster or shine. | Solid
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| Many metals are ___, which means they can be pounded into sheets or other shapes. | Malleable
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| Metals are good ___ of electric current and of energy as heat. | Conductors
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| Nonmetals appear to the __ of the zigzag line on the periodic table. | Right
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| Nonmetals appear to the right of the zigzag line on the periodic table except ___, the first element in the top-left corner of the table. | Hydrogen
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| Many nonmetals are ___ at room temperature. | Gases
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| Nonmetals are typically __, or they lack luster. | Dull
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| Solid nonmetals are __, or not malleable. | Brittle
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| Nonmetals are poor conductors of __ current and of energy as heat. | Electric
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| Metalloids appear ___ metals and nonmetals along the zigzag line. | Between
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| Metalloids are elements that have some properties of ___ and ___. | Metals and nonmetals
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| Metalloids are typically ___ . | Solid
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| Metalloids have a somewhat metallic ___. | Luster
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| Metalloids are less ___ than metals but not as brittle as nonmetals. | Mallable
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| Metalloids are know as ___ because they conduct electric current better than nonmetals but not as well as metals. | Semiconductors
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| Where are metalloids found on the periodic table? | Along the zigzag line
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| Where are metals found on the periodic table? | To the left of the zigzag line
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| Where are nonmetals found on the periodic table? | To the right of the zigzag line
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| What elements make up Earth? (There are 9 of them) | Oxygen, silicon, aluminum, calcium, sodium, potassium, magnesium, nickel, and iron.
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| What is the chemical symbol of the element that makes up about one-third of Earth's mass? | Iron, Fe
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| What are the three layers of Earth? | The crust, the mantle, and the core
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| The continents and ocean floors are parts of Earth's ___. | Crust
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| Earth's mantle is made of rock that is so hot that it flows slowly. Most of this rock is made of silicon, oxygen, iron and magnesium. What are the chemical symbols for these elements? | Si, O, Fe, Mg
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| The main elements of the crust are oxygen, silicon, and aluminum. What are the chemical symbols of these three elements? | O, Si, Al
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| The main elements in Earth's core are the metals with these chemical symbols, Fe and Ni. What are the elements? | Iron and nickel
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| The main elements in Earth's core are iron and nickel. What class of elements are these? (Metals, nonmetals, or metalloids) | Metals
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| The elements of Earth's crust is oxygen, silicon and aluminum. Which of these elements are nonmetals? | Oxygen
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| The elements of Earth's crust is oxygen, silicon and aluminum. Which of these elements are metals? | Aluminum
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| The elements of Earth's crust is oxygen, silicon and aluminum. Which of these elements are metalloids? | Silicon
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| The ___ is a layer of gases surrounding Earth. | Atmosphere
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| The atmosphere is a layer of ___ surrounding the Earth. | Gases
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| The ocean is is mostly water, but it is made up of over 30 elements. The salts in the ocean contain the elements Na, Cl, S, Mg, Ca, and K. Which of these elements are metals? | Sodium, Magnesium, Calcium, Potassium
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| The ocean is is mostly water, but it is made up of over 30 elements. The salts in the ocean contain the elements Na, Cl, S, Mg, Ca, and K. Which of these elements are nonmetals? | Chlorine, Sulfur,
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| All living things, and things that were once alive, contain the element ___. This included fossil fuels, such as coal and petrolieum. | Carbon
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the chemical symbol of hydrogen? | H
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the chemical symbol of Oxygen? | O
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the chemical symbol of nitrogen? | N
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the chemical symbol of Phosphorus? | P
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the chemical symbol of calcium? | Ca
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the atomic number of hydrogen? | 1
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the atomic number of Oxygen? | 8
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the atomic number of nitrogen? | 7
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the atomic number of Phosphorus? | 15
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| Other elements that are abundant in living things include hydrogen, oxygen, nitrogen, phosphorus and calcium. What is the atomic number of Calcium? | 20
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| A ___ is a pure substance made up of one type of atom. | Element
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| Letters that represent an element are called __. | Chemical symbols
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| The central region of an atom is called the ___. | Nucleus
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| The atomic number of barium is 56. What do you know about the subatomic particles in an atom of this element? | Barium has 56 protons.
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