Chemistry Quiz: States of Matter
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Questions and Answers

Which of the following is NOT a property used to identify solids and gases?

  • Hardness
  • State of Matter
  • Color
  • Mass (correct)

Helium is an example of a compound.

False (B)

What distinguishes between different scents that are made of the same atoms?

The arrangement of atoms is different.

Air is considered a __________ because it contains multiple gases.

<p>mixture</p> Signup and view all the answers

Match the following elements with their corresponding compounds:

<p>Nitrogen = NH₄ - Ammonia Oxygen = H₂O - Water Iron = CO₂ - Carbon Dioxide Copper = —</p> Signup and view all the answers

What is the primary purpose of the gumdrop activity?

<p>To demonstrate that air is a mixture. (D)</p> Signup and view all the answers

Oxygen makes up 21% of the air.

<p>True (A)</p> Signup and view all the answers

List the two gases that are primarily found in the air and their respective percentages.

<p>Nitrogen 78%, Oxygen 21%</p> Signup and view all the answers

The gases that make up the air primarily include nitrogen, oxygen, and __________.

<p>carbon dioxide</p> Signup and view all the answers

Match the properties of solids with their respective classifications:

<p>Hardness = Physical Property Malleability = Physical Property Color = Physical Property Odor = Chemical Property</p> Signup and view all the answers

Which model represents the molecule with the chemical formula ICI?

<p>Iodine monochloride model (A)</p> Signup and view all the answers

The chemical formula for a substance composed of one carbon atom, two hydrogen atoms, and two oxygen atoms is CHâ‚‚Oâ‚‚.

<p>True (A)</p> Signup and view all the answers

What is the chemical formula for ethanol?

<p>Câ‚‚Hâ‚…OH</p> Signup and view all the answers

The molecule composed of one carbon atom, two hydrogen atoms, and two oxygen atoms is known as __________.

<p>formic acid</p> Signup and view all the answers

Match the following chemical formulas with their corresponding substances:

<p>CHâ‚‚O = Methanol CHâ‚‚Oâ‚‚ = Formic Acid Câ‚‚Hâ‚„O = Ethanol</p> Signup and view all the answers

Flashcards

Air composition

Air is a mixture of different gases, primarily nitrogen, oxygen, and small amounts of water vapor and carbon dioxide.

Nitrogen percentage in air

Nitrogen makes up about 78% of the Earth's atmosphere.

Oxygen percentage in air

Oxygen makes up about 21% of the Earth's atmosphere.

Gumdrop model purpose

The gumdrop model visually represents how different gases are made of different atoms.

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Gases' properties

Gases have properties like their odor, which are due to the arrangement, amount, and type of atoms.

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Property of Matter

A characteristic used to describe a material (substance).

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Substance

A material made up of only one type of atom.

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Differing scents (same atoms)

Different arrangements of atoms lead to different scents even if the atoms are the same.

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Air as a Mixture

Air is a mix of multiple gases; various odors and compositions.

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Classroom/Cafeteria Air Difference?

Different odors and gas amounts distinguish classroom and cafeteria air mixtures.

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ICI Chemical Structure

Iodine Monochloride's molecular structure.

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Câ‚‚Hâ‚„O Chemical Formula

A molecule containing two carbon atoms, four hydrogen atoms, and one oxygen atom.

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CHâ‚‚O Chemical Structure Identify

Identify the structure that corresponds to a chemical formula containing one carbon, two hydrogen atoms, and one oxygen atom.

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Chemical Formula for C, H, O

Determine the formula(CHâ‚‚Oâ‚‚, CHâ‚‚O, or Câ‚‚Hâ‚„O) for the molecule with one carbon, two hydrogen atoms, and two oxygen atoms.

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Identify Molecule

Recognize the correct molecular model from various options.

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