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elements and compounds
Page 5
Questions (232)
With a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds? Or do we
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A student drew pictures to show the differences between elements and compounds.
Element and Compound. Which statement can the
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A student drew pictures to show the differences between elements and compounds.
Element and Compound. Which statement can the
1 answer
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1.
Rubidium metal (Rb): Rubidium metal (Rb) 2. Water (H2O) : Water (H2O) 3. The plastic container that reaction is taking place
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The incomplete burning of _____ in gasoline is known to create black carbon and contribute to global warming.(1 point)
Responses
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What is the percent of Cu in CuBr2
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Two or more different atoms are combined in definite proportions in any
Symbol c) element Isotope d) compound
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.
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A student drew pictures to show the differences between elements and compounds.
Which statement can the student support with her
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@~@
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A student drew pictures to show the differences between elements and compounds.
Which statement can the student support with her
1 answer
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An element is made of a single type of atom, and a compound is made of two or more atoms.
TRUE OR FALSE
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A student drew pictures to show the differences between elements and compounds. Which statement can the student support with her
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dee
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A student drew pictures to show the differences between elements and compounds. Which statement can the student support with her
1 answer
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Demon
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Which statement can the student support with her pictures?
(1 point) Responses An element is very reactive, but a compound is
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ANSWER CORRECTLY
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A student drew pictures to show the differences between elements and compounds. Which statement can the student support with her
1 answer
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Question A student drew pictures to show the differences between elements and compounds. Which statement can the student support
1 answer
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do mortan salt make salt water
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Sugar is made of carbon, hydrogen, and oxygen atoms. Which statement below best describes sugar? (1 point)
◎ A solution because
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Connexus_solver
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Why is bauxite the most common ore that aluminum is extracted from? Select the two correct answers.(1 point)
Responses It is the
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"green" material has high amounts of phosphorus, magnesium, carbon or nitrogen?
1 answer
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Question 1 A) Taylor is learning about pure substance and mixture. In her notes, she included a table with the properties of
8 answers
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Demon
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Select the diagram that correctly illustrates a mixture of oxygen, 02, and nitrogen, N2, gases.
o= atom of one element •=atom
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The model below shows a molecule of a gas that is present in Earth's atmosphere. Which statement best describes the molecule? (1
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william Alexaner
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Elements and compounds are considered mixtures.
t or f
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@~@
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1.Carbon is the basic building block for all forms of life on ...
Review the graphic and select the best response based on that
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Carbon - 12.01
Hydrogen - 1.01 Oxygen - 16.00 A chemist will use a sample of 30 g of ethanol (CH^3CH^2OH) in an experiment. in
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Passenger
% C % H % N % O Location Empirical Formula Compound Identity 1 80.46 10.15 9.39 -- Blood
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how do the properties of the following elements determine their use? copper and aluminuim were both used in electrical wiring at
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Look at the chart.
Which word belongs in the blank space? (1 point) Responses smoke smoke water water soil soil wood
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zalia simmons
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You already know that matter can be a pure substance or a mixture. And you know that both creating and separating mixtures are
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Using this graph, and the following question:
1.Carbon is the basic building block for all forms of life on ... After reviewing
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asked by
kaite marie
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“Green” material has high amounts of (1 point)
Responses phosphorus. phosphorus. nitrogen. nitrogen. carbon. carbon.
1 answer
asked by
GOD
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What is water’s chemical makeup?
A two hydrogen atoms and one oxygen atom B two hydrogen atoms and two oxygen atoms C one
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Parent Categories (17)
Atomic Mass
Atomic Structure and Bonding
Basic Concepts
Chemical Substances
Chemistry
Chemistry Education
Earth Sciences
Oxidation Numbers
Periodic table
Pure Substances
Science and Chemistry
Science and Technology
Substances
Substances and Mixtures
Types of Matter
Types of Pure Substances
Types of substances