Skip to main content
Ch.2 - Atoms, Molecules & Ions
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMcMurry 8th EditionCh.2 - Atoms, Molecules & IonsProblema 11
Capitolo 2, Problema 11

The molecular illustration represents (LO 2.18) (a) a pure element (b) a mixture of two elements (c) a pure compound (d) a mixture of an element and a compound

Guida verificata passo dopo passo
1
Step 1: Understand the definitions of the terms involved. A pure element consists of only one type of atom. A mixture of two elements contains two different types of atoms not chemically bonded. A pure compound consists of molecules made from two or more different types of atoms chemically bonded. A mixture of an element and a compound contains both unbonded atoms and molecules.
Step 2: Analyze the molecular illustration provided. Identify the types of particles present in the illustration.
Step 3: Determine if the particles are atoms or molecules. Atoms represent elements, while molecules represent compounds.
Step 4: Check if the particles are all the same or if there are different types. This will help determine if the illustration represents a pure substance or a mixture.
Step 5: Based on the analysis, match the illustration to one of the options: (a) a pure element, (b) a mixture of two elements, (c) a pure compound, or (d) a mixture of an element and a compound.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Pure Element

A pure element consists of only one type of atom and cannot be broken down into simpler substances by chemical means. Examples include oxygen (O2) and gold (Au). Understanding pure elements is essential for distinguishing them from compounds and mixtures.
Video consigliato:
Percorso guidato
02:35
Elemental Forms of Elements

Pure Compound

A pure compound is a substance formed when two or more different types of atoms bond chemically in fixed proportions. Water (H2O) and carbon dioxide (CO2) are examples. Recognizing pure compounds is crucial for identifying chemical compositions in molecular illustrations.
Video consigliato:
Percorso guidato
02:11
Ionic Compounds Naming

Mixture

A mixture is a combination of two or more substances where each retains its individual properties and can be separated by physical means. Mixtures can be homogeneous (uniform composition) or heterogeneous (distinct phases). Understanding mixtures helps differentiate them from pure substances in molecular representations.
Video consigliato:
Percorso guidato
01:03
Solubility and Mixtures
Pratica correlata
Domanda del libro di testo
Which sample has the greatest mass? (LO 2.16) (a) 5.5 mol of C (b) 2.1 mol of S (c) 4.2 mol of Be (d) 0.52 mol of Ag
1030
views
1
rank
Domanda del libro di testo

What is the correct formula for sodium phosphate? (LO 2.24) (a) Na3PO4 (b) Na3P (c) NaPO4 (d) Na(PO4)2

1697
views
Domanda del libro di testo
How many protons, neutrons, and electrons are in 107Ag+? (LO 2.21) (a) protons = 47, neutrons = 60, electrons = 46 (b) protons = 47, neutrons = 107, electrons = 48 (c) protons = 60, neutrons = 47, electrons = 47 (d) protons = 47, neutrons = 107, electrons = 46
1027
views
1
rank
Domanda del libro di testo
How many atoms are present in 1.2 g of gold? (LO 2.16) (a) 2.5 * 1021 (b) 1.4 * 1026 (c) 7.2 * 1023 (d) 3.7 * 1021
1013
views
Domanda del libro di testo

Bromine has two naturally occurring isotopes; 79Br (mass of 78.918) and 81Br (mass of 80.916). If the atomic weight of bromine is 79.904, predict the mass spectrum of a sample of bromine atoms. (LO 2.17) (a)

(b)

(c)

(d)

540
views
Domanda del libro di testo

Which of the following compounds would you expect to have covalent bonds? (LO 2.20) (a) Na2O (b) PBr3 (c) CaBr2 (d) MgS

588
views