Skip to main content
Ch. 2 - Biochemistry Basics
Norman-McKay- Microbiology: Basic and Clinical Principles 2nd Edition
Norman-McKay2nd EditionMicrobiology: Basic and Clinical PrinciplesISBN: 9780137661619Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoNorman-McKay 2nd EditionCh. 2 - Biochemistry BasicsProblema 3
Capitolo 1, Problema 3

Select all of the compounds from the following list. If it is not a compound, then state what it is.
a. H2O
b. HCO3-
c. O2
d. H2
e. Li2+
f. C6H12O6
g. H+

Guida verificata passo dopo passo
1
Step 1: Understand the definition of a compound. A compound is a substance formed when two or more different elements are chemically bonded together in fixed proportions.
Step 2: Analyze each item in the list to determine if it contains more than one type of element bonded together (compound) or if it is a molecule of a single element or an ion.
Step 3: For each item, identify the elements present: a. H2O contains hydrogen and oxygen (different elements) → compound; b. HCO3 contains hydrogen, carbon, and oxygen (different elements) → compound; c. O2 contains only oxygen atoms (same element) → molecule, not a compound; d. H2 contains only hydrogen atoms (same element) → molecule, not a compound; e. Li2+ is a lithium ion with a charge, consisting of only lithium atoms (same element) → ion, not a compound; f. C6H12O6 contains carbon, hydrogen, and oxygen (different elements) → compound; g. H+ is a hydrogen ion (single element) → ion, not a compound.
Step 4: Summarize the classification: compounds are those with multiple different elements chemically bonded; molecules of a single element are not compounds; ions are charged species and not compounds unless they contain multiple elements.
Step 5: Conclude by listing which are compounds and stating the nature of the others (molecule of single element or ion).

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:
1m

Concetti chiave

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

Definition of a Chemical Compound

A chemical compound is a substance formed when two or more different elements chemically bond in fixed proportions. Compounds have unique properties distinct from their constituent elements. For example, H2O (water) is a compound made of hydrogen and oxygen atoms bonded together.
Video consigliato:
02:27
Phenolic Compounds

Difference Between Elements, Ions, and Molecules

Elements consist of only one type of atom, such as O2 (oxygen molecule) or H2 (hydrogen molecule). Ions are charged particles, like Li2+, which is a lithium ion with a positive charge. Molecules can be elements (O2) or compounds (H2O), depending on whether they contain one or multiple element types.
Video consigliato:
04:55
Types of Small Molecule Transport Review

Chemical Formulas and Their Interpretation

Chemical formulas represent the types and numbers of atoms in a substance. For example, HCO3 is the bicarbonate ion, not a neutral compound, while C6H12O6 is glucose, a compound with carbon, hydrogen, and oxygen. Understanding formulas helps identify whether a substance is a compound, element, or ion.
Video consigliato:
06:53
Introduction to Chemical Bonding
Pratica correlata
Domanda del libro di testo

Determine the following:

a. The molarity of a solution with 0.5 moles of glucose per liter of water.

b. The concentration (in weight/volume percent) of a solution that contains 20 grams of sodium chloride per liter of water.

c. The concentration (in mg/dL) of a solution with 1 gram of lactic acid per 100 mL of solution.

d. The molarity of a solution with 1 mmol of solute in 1 L of water.

1386
views
Domanda del libro di testo

Write the molecular formula for a substance that contains two oxygen molecules, two carbons, and four hydrogen atoms. Be sure to follow the standard conventions of writing molecular formulas.

1364
views
Domanda del libro di testo

Using the periodic table, answer the following questions:

a. What is the atomic number for lithium (Li)?

b. What is the atomic mass of oxygen (O)?

c. What is the chemical symbol for potassium?

d. How many protons does nitrogen have?

e. How many neutrons does lead have?

814
views
Domanda del libro di testo

What ions result when hydrogen donates one electron to fluorine?

916
views
Domanda del libro di testo

Select the false statement about salts.

a. Salts are ionic compounds.

b. Salts are formed when an acid and a base react with each other.

c. Salts consist of an anion and a cation component.

d. Salts may be inorganic.

e. Salts are usually acids.

f. Salts are usually hydrophilic.

1407
views