Matching Pairs Semester 2 Science Final Online GameOnline version Review game for semester 2 final. by Amanda Occhino 1 Both a pool of water and a piece of ice are the same___________, so they have the same ______. 2 Butter melting in a pan is a physical(_____) change where energy is ___. 3 ___ are negatively charged particles in an atom. 4 The series of electron orbits in ’_____ model resemble planets orbiting the Sun or the layers of an onion. 5 An object that floats on water has a density ___ than 1-g/mL. 6 A piece of paper will provide protection from _____radiation. 7 An object’s weight is 1/6 on the moon as it is on earth. On the moon, the object’s mass ____ 8 The horizontal rows on the periodic table are known as _____ or _____ . 9 An object that sinks in water has a density ____ than 1-g/mL. 10 Nonmetals can be found on the _____ side of the periodic table. 11 The atomic nuclei of unstable isotopes release fast-moving particles and energy in a process called ______ . 12 Fluorine, chlorine, bromine, and iodine are all part of the _____ family. 13 Another term for the ability to burn is _____ at temperatures below 37.8 ℃. 14 The modern periodic table is organized according to _______ . 15 _____ energy naturally flows from warmer to cooler matter, this is what we know as heat or heat flow. atomic number less substance,composition periods, series Thermal flammability right remains the same alpha halogen greater endothermic, absorbed Bohrs radioactive decay electrons 1 One liter is equal to ____ milliliters. 2 Four measurable physical properties of matter are _____, ____, ___, and ___. Of these, ___ and ____ are derived measurements and must be calculated. 3 Salad dressing is an example of a _____ mixture. 4 H2SO4 and H2SO3 ____ the same substance. 5 Glass breaking, ice melting, and the dissolution of sugar in water are all ____properties. 6 Characteristics of matter are called_______. 7 Compounds are formed as a result of _____ during chemical reactions in a set ratio. 8 Scientific theories often make use of __ , which are representations of an idea to help scientists understand what they cannot directly observe. 9 New substances are produced by a(n) __________change, while a(n) _____ change does not result in a new substance. 10 ____ has mass and volume (takes up ____). 11 Atoms with the same number of protons and different numbers of neutrons are called _____ . 12 Each element is given a specific ___ that usually consists of one or two letters. 13 One milliliter is equal to ______cubic centimeters. 14 A column of elements on the periodic table is called a ____ or a ____ because they have similar _____ . 15 Iron rusting, silver tarnishing, fruit ripening, and combustion are all ____ properties. isotopes mass,volume,density,length, volume,density bonding models chemical, physical chemical symbol 1 group, family, characteristic properties heterogeneous physical properties Matter,space 1000 Are not 1 The amount of matter in an object is a measure of its _____. 2 Salt water is an example of a ______mixture.(specifically a solution) 3 The amount of space an object takes up is a measure of its _______. 4 The property of an element that indicates the number of protons in its atoms is the _______of that element. 5 Is the study of matter and the changes in matter. 6 Elements that easily transmit electricity and heat display the property known as ______ . 7 The chemical _____ for water is H2O and for hydrogen peroxide is H2O2. 8 The chemical ______ for tungsten is W, where Au stands for gold. 9 The chemical reactivity of metals tends to ____ from left to right across the periodic table. 10 Mendeleev discovered that periodic patterns appeared when he arranged the elements in order of increasing ______ . 11 Solid, liquid, gas, plasma, quantum foam are the five _____ (states) of matter. 12 The spontaneous emission of radiation by an unstable atomic nucleus was named ______ by Marie Curie. 13 The ____ of an object is a measure of the thermal energy (motion of the particles) of a substance. 14 Substances in a ___ keep their own properties since they are not chemically combined. 15 The ability of iron to rust is a(n) _____property. atomic mass homogeneous symbol mixture decrease radioactivity Mass temperature conductivity formula Chemistry chemical atomic number phases Volume 1 The mass of an object is constant, whereas the weight of the same object ___ depending on its location. 2 Elements known as ____ are located to the right of the metalloids on the periodic table. 3 At room temperature, all the metalloids are solids, while many of the nonmetals are _____ . 4 The ratio of each type of atom in sulfuric acid, H2SO4, is _ hydrogen to _ sulfur to _ oxygen. 5 The form/appearance of a substance is altered during a _ change,where the actual chemical composition/ratio of atoms is altered during _ change. 6 Most metals are in the ___ state or phase at room temperature. 7 A balloon filled with air does not rise as high as a balloon filled with helium gas, telling me that helium gas is _____ dense than air. 8 The ___ is the very small center of an atom. 9 The Law of Conservation of__states that in any physical/chemical change, matter is neither created or destroyed,only changed from one form to another. 10 The physical property that makes metal pots good for cooking is ___ conductivity. 11 The mass per unit volume of an object is a measure of its __. 12 In 1869, Dmitri Mendeleev created the first version of the ______ . 13 The SI unit for density is ___, but the common unit is ____. 14 The energy stored in bonds between atoms is chemical energy, a form of _____ energy. 15 The metal tungsten is used in incandescent light bulbs because of its property of ___conductivity. periodic table nucleus kg/m3, g/cm3 Mass Thermal nonmetals changes potential 2,1,4 less gases electrical Density physical,chemical solid 1 The half-life of a radioactive isotope is the length of time needed for half of the atoms of a sample to _____ . 2 The SI unit for volume is _______. 3 Two ways a proton and a neutron are similar are they have the same ____ and are both located in the ____ . 4 When the atoms in elements combine to form compounds, their ___ change. 5 The common unit for volume is ________ 6 ______Is made out of atoms and can form molecules, or compounds 7 The SI unit for mass is _, but the common unit is _. 8 The substances in a ____ mixture can usually be seen and are easily separated. 9 Atoms are neutral because they have equal numbers of _____ and _____ . 10 The mass of a(n) _____ is so small that it doesn’t really change the mass of an atom. 11 Because radioactive isotopes decay at a predictable rate, the half-life can be used to tell how old a material is by the process of _________ . 12 The substances in a ___ mixture are evenly distributed and you cannot see the parts. 13 A mixture of iron and sulfur can be separated by 14 The SI unit for weight is _______ 15 When uranium-238 decays into lead-206,the difference between the mass of uranium & lead is _amu,while the difference between their atomic numbers is_. electron elements decay Newton Heterogeneous 32,10 properties cubic centimeters or milliliter Homogeneous kg,g protons, electrons Magnet radioactive dating liters or cubic meter mass, nucleus 1 The amount of space that matter fills is its ___ 2 A special form of homogeneous mixture that is composed of evenly distributed solute particles in a solvent is called a(n) ________ 3 ___ is the inward force among the molecules of a liquid. 4 An_particle is released when radium decays into radon, while a__particle is released when changing neutron into proton when lead decays into bismuth. 5 The _____ is a measure of the average speed of the particles in a substance. 6 ____is always released during any type of radioactive decay. 7 _____is so unique that it could easily be placed in either group 1 or group 17. 8 A(n) ____ has a definite volume and a definite shape. 9 Radioactive isotopes called _____ can be used to detect some medical problems. 10 ________metals tend to be less reactive than the families to the left and right of them. 11 A state of matter with a definite volume, but no definite shape is a(n) ____. 12 The __ of a gas is represented by the formula f/A, where f = force pushing on the walls of a container and A = area of the walls of the container. 13 A(n) __ has neither a definite volume nor a definite shape. 14 ____ metals react violently with water. 15 A(n)____will always take the shape and volume of its container. pressure volume temperature liquid Homogeneous Solution alkali gas Gamma radiation surface tension transition alpha, beta hydrogen tracers solid gas 1 The properties of solid metals can be explained by the ___ of and the bonding among the metal atoms. 2 A(n) _____ solid has a melting point range. 3 The process where bromine gas touches a surface and becomes crystals is called _____. 4 Orderly crystal shapes, high melting points, and electrical conductivity when dissolved in water are properties of _____compounds. 5 The process that makes ice cubes shrink as they sit in a freezer is called _____. 6 Ionic compounds that dissolve in water conduct electricity because they break into _____ that move freely. 7 Glass is an example of a(n) _____ solid. 8 Freezing occurs when the particles of a liquid ___ enough energy to take fixed positions. 9 The temperature at which a liquid turns to a gas is its ____. 10 A substance is a single kind of matter that has a specific ________. 11 Particles of a _____ have the greatest thermal energy. 12 Metalloids have properties of____ metals and nonmetals. 13 A(n) ___ solid has a definite melting point. 14 The element in group 18, period 4 is ___ and it would be a___at room temperature and would ____react with other elements. 15 Both gases and liquids are ____. amorphous crystalline structure fluids Deposition gas krypton, gas, not ions lose ionic Composition sublimation both amorphous boiling point 1 Water particles in gas coming off a pan of boiling water are moving ____than the particles of water in the pan. 2 When an atom loses an electron, it becomes a(n) ______ charged ____ . 3 ______ is the reverse process of freezing. 4 ______ occurs at a specific temperature when a liquid becomes a gas beneath and on the surface of a substance. 5 Vaporization is the reverse process of _______. 6 As a result of Rutherford’s gold foil experiment scientists inferred that an atom’s __ charge must be concentrated in the __ of the atom. 7 A nonpolar bond is formed when two atoms share electrons _____ . 8 When electrons are ____ between two atoms, a covalent bond is formed. 9 Sublimation and _______ both happen at the surface of a substance. 10 A(n) _____ change (reaction) releases energy(gets warmer), while a(n) _____ change (reaction) absorbs energy(gets colder). 11 A low melting point is one property of _____compounds. 12 The overall charge on an atom is__ ; the overall charge on a compound is___ . 13 The temperature at which a liquid turns to a solid is called its ________. 14 _____&____ are both forms of vaporization. 15 ____ occurs at any temperature when a liquid becomes a gas on the surface of a substance. freezing point covalent positively, cation 0, 0 boiling evaporization exothermic,endothermic condensation boiling and evaporization positive,nucleus melting evaporization equally shared faster 1 A _____ bond is when two pairs of electrons are shared between two atoms. 2 Beta radiation consists of particles that are identical to ____ . 3 The atomic number of an element is the number of __ in its ___ . 4 Measurements of half-life make radioactive isotopes useful for determining the ages of ___and___. 5 Mendeleev created the first periodic table by arranging elements in order of __ atomic __ . 6 Aluminum foil is an example of a metal that is _____. 7 A(n)_______ is the smallest part of a substance. 8 Electrons involved in bonding between atoms are __ electrons located __ from the nucleus in the _ and _ sublevels that have a ___ charge. 9 A chemical bond formed when two atoms share electrons is called a(n) _______ . 10 Metals are ___,____ and can carry an ____. 11 You can predict an element’s _____ based on its location on the periodic table. 12 At room temperature, more than half of the nonmetal elements are ___ . 13 The elements that do not react to form compounds under normal conditions are the ____. 14 Molecular compounds that dissolve in water do not conduct electricity because no ___ are present. 15 The two most common alkaline earth metals are ___and __ increasing, mass malleable,ductile,electric current electrons ions protons,nucleus valence, farthest, s, p, negative characteristics properties malleable . covalent bond double calcium,magnesium atom rocks,fossils gases noble gases 1 In the chemical formula for an ionic compound, the name of the ______ is written first. 2 A(n) ______ is the smallest unit of matter that has the properties of its element. 3 Elements in the same row on the periodic table have ___ properties that change in a pattern. 4 Ions that are made of more than one type of atom are examples of ___________ . 5 A mixture made up of two or more elements, at least one of which is a metal is called a(n)____ . 6 In an atom, the number of ____ and ___ are equal. 7 An ionic bond is the attraction between______________charged ions. 8 ___ orbit the nucleus of an atom. 9 The _____ is the number of protons in an atom. 10 The most reactive metals on the periodic table are found in group ___ , period ___ which are the ___ metals. 11 _______ have properties of both metals and nonmetals. 12 Most elements on the periodic table are classified as ____ . 13 A material that is ___ can be pulled or drawn into a long wire. 14 The elements in the same column (or __ or __ ) on the periodic table have similar ______ . 15 Fluorine is a(n)_______ molecule because the valence electrons are shared equally between the two fluorine atoms. one,1-7, alkali alloy oppositely ductile non polar covalent atomic number electrons polyatomic ions metallic cation periodic metals group,family,characteristic properties element metalloids protons,electrons
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