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1. Intro to General Chemistry

Classification of Matter

General Chemistry

1. Intro to General Chemistry

Classification of Matter

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Multiple Choice

Choose the homogeneous mixture from the list below.

A

Soda

B

Smog

C

Trail mix

D

Bowl of cereal with milk

E

Pure oxygen and nitrogen gas

Verified step by step guidance

1

Understand the definition of a homogeneous mixture: A homogeneous mixture is a mixture that has a uniform composition and appearance throughout. The components are evenly distributed and not easily distinguishable.

Analyze each option provided: Soda, Smog, Trail mix, Bowl of cereal with milk, and Pure oxygen and nitrogen gas.

Consider Soda: Soda is a homogeneous mixture because it is a solution where the solute (sugar, flavorings, etc.) is uniformly distributed in the solvent (water).

Consider Smog: Smog is a heterogeneous mixture because it consists of various particles and gases that are not uniformly distributed.

Consider Pure oxygen and nitrogen gas: This is a homogeneous mixture because both gases are evenly mixed at the molecular level, forming a uniform composition throughout.

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Related Practice

Classify each of the following as an element, compound or mixture.

a) Ammonia, NH3

b) Gold bar

c) Orange juice

d) Wine

e) Saline solution

Multiple Choice

Consider the following data obtained by decomposing samples of carbon dioxide, CO₂, into its component elements.

Mass of CO₂ and Components
Sample	Mass CO₂	Mass C	Mass O₂
1	44.00 g	12.00 g	32.00 g
2	22.00 g	6.00 g	16.00 g
3	88.00 g	24.00 g	64.00 g

Which of the following statements is consistent with this data?

Multiple Choice

Atoms __________ .

Multiple Choice

Which of the following is an example of a pure substance?

A _____ is a physical combination of matter in any proportions.

Textbook Question

Which of the following statements is a hypothesis about the synthesis of gold nanoparticles? (LO 1.1) (a) Adding a salt solution to gold nanoparticles causes the color to change from red to blue.(b) To examine the effect of salt on gold nanoparticles, variable concentrations of salt are added to the nanopar-ticles and the results are measured(c) A solution of gold nanoparticles with an average diam-eter of 30 nm has a wavelength of maximum absorption of 450 nm and is a reddish-orange color.(d) Adding a substance with a negative charge to the surface of the nanoparticles creates repulsive forces that stabilize small particle size

Textbook Question

Which of the following figures represents (d) a mixture of an element and a compound? (More than one picture might fit each description.)

Textbook Question

Which of the following figures represents (a) a pure element, (More than one picture might fit each description.)

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