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Q 1/93
Score 0
All matter is made up of
30
molecules
substances
atoms
mixtures
Q 2/93
Score 0
What is the nucleus made up of?
30
protons and electrons
protons, neutrons, electrons
protons and neutrons
neutrons and electrons
93 questions
Q.
All matter is made up of
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Q.
What is the nucleus made up of?
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What is the center of an atom called?
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How have scientists been able to discover how an atom is organized?
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Which of the following has a positive charge?
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Which of the following has a neutral charge?
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Which of the following has a negative charge?
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What is formed when two or more atoms join together?
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__________ is matter that has definite chemical and physical properties.
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A pure substance is made up of multiple kinds of molecules.
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An ________ is a pure substance that is made of only one type of atom.
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A _________ is a pure substance made of two or more elements that are chemically combined.
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A ___________ contains two or more pure substances that are mixed together, not chemically combined.
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Mixtures can mix pure substances, compounds, or both.
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In a _______________, the different substances are mixed very thoroughly.
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In a _______________, you can see the different substances that have been combined.
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A __________ is the name for the homogenous mixture that is so well mixed, you can no longer see the different substances.
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The __________ in a solution is what you have the most of.
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The _______ in a solution is the substance you have the least of.
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__________ is a measure of how well a solute can dissolve in a solvent at a given temperature.
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A substance is __________ if it cannot dissolve in a particular solvent.
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A __________ is created when your solute is incapable of dissolving into your solvent.
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A __________ is a way of writing out what happens during a chemical reaction.
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What law states that matter cannot be created or destroyed?
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What are found on the left hand side of a chemical equation?
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What are on the right hand side of a chemical equation?
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What is the larger number that is always in front of the element? This number tells you how many molecules you have.
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What is the smaller number that always comes after an element symbol? This number tells you how many atoms are in the molecule.
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On the Periodic Table what tells you how many protons and electrons an atom has?
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What on the Periodic Table is the same no matter what language you read the table in?
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The first and second letter in a chemical symbol is always capitalized.
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What on the Periodic Table may be different for a scientist viewing the table in a different language?
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The sum of the mass of all of the protons, neutrons, and electrons in one atom is called the
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All of the matter in the universe is made up of the 118 elements on the
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What are the horizontal rows that contain elements that are similar called?
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What are the vertical columns that have very similar elements called?
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which of the following are shiny and soft, highly reactive with other elements, easily lose their outermost electrons, can be cut easily, and in nature are only found in salts?
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Which of the following are shiny and silvery-white, somewhat reactive with other elements, easily lose their two outermost electrons, and have a low density, melting point, and boiling point?
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Which of the following are malleable and ductile, very good conductors of heat and electricity, very dense, and have a high boiling point and high melting point?
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Which of the following are the metals that don't share characteristics with any other family of metals, are malleable and ductile, have a semi-high density, are opaque, and are solid at room temperature?
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Which of the following are the elements in between the metals and the non-metals, share similarities with both metals and non-metals, and most are semi-conductors?
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Which of the following do not conduct heat or electricity well, are very brittle, some are gases and some are solids, and they have no luster and reflect no light?
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Which of the following are non-metallic, toxic, highly reactive, and occur in solids, liquids, and gases at room temperature?
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Which of the following almost never react with any other elements, have full outer shells, are very stable, are all gases, odorless and colorless, and have low melting and boiling points?
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Which of the following are referred to as the lanthanide and actinide series, mostly synthetic (man-made), are a part of group 3 on the Periodic Table, and are metals?
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__________ don't require you to change the element in any way to test/see them.
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____________ do require you to change the element in order to test/see them.
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Melting point is a __________ property.
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The __________ of a substance is the temperature at which it turns from a solid to a liquid.
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Boiling point is a __________ property.
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When the temperature at which the liquid will start to boil and turn into a vapor/gas it is called the
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Burning is a __________ property.
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Luster is a _________ property.
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The amount of a light a substance reflects is called
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_______ objects reflect a lot of light. They can appear glossy, bright, sparkle, or have a high sheen.
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________ objects reflect little or no light. This can make them appear muted, unclear, or cloudy.
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How _____ a substance is means how easy it is to draw out into a long, thin wire.
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Ductility is a ________ property.
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Toxicity is a _______ property.
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_________ is the degree to which a substance can harm a living organism.
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Malleability is a __________ property.
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An element that is ________ is easily able to bend and form into different shapes without breaking.
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An element that is _______ is stiff and rigid. It if is bent or formed too much, it will break.
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Density is a ________ property.
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The _______ of a substance is how much mass it has compared to how much space it takes up.
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Half life is a _______ property.
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The ________ of a substance measures how long it takes for half of the material to decay.
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Hardness is a _______ property.
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The ________ of a substance is how well it resists being changed when you add force to it.
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What is the hardest natural, widely available material known to man at this time?
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Conductivity is a _______ property.
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The ________ of a substance measures how easily electrical current flows through it.
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If a substance has a low conductivity, it resist the flow of electricity making it a(n)
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Reactivity is a _______ property.
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The _______ of a substance measures how it reacts with other substances.
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Fizzing, color changes, and fire or heat are some of the indicators of a chemical reaction.
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A __________ is a representation of an atom. It shows where all of its smaller parts, or subatomic particles, are located within the atom.
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Who developed Bohr Diagrams?
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Chemical reactions are happening all the time, but physical reactions only occur occasionally.
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_________ is when molecules bump into each other at a high rate of speed.
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The _________ is how fast or slow reactions occur.
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What is an example of a slow rate of reaction?
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What is an example of a fast rate of reaction?
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_________ means how much of a substance there is.
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_________ is how much heat a substance has.
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________ is when force is being exerted on a substance.
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________ is the amount of a substance that is on it's outside faces.
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________ something means you are causing vigorous movement.
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Agitation can include stirring, shaking, swirling, tossing, churning, or boiling.
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Who was the first scientist to propose that elements are composed of indestructible atoms?
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Who discovered the presence of negatively charged particles in atoms?
91
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Who worked out that each atom had a small and heavy positively charged center, which he called a nucleus?
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Who proposed the existence of uncharged particles in the nucleus, which he called neutrons?
