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6th U3.5 Science

Unit 3 Lesson 5 Atoms and Elements

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