Podcast
Questions and Answers
Which of the following statements correctly identifies whether a substance is a chemical compound based on its molecule model?
Which of the following statements correctly identifies whether a substance is a chemical compound based on its molecule model?
- A substance is a chemical compound if its molecule model shows only one type of atom.
- A substance is never a chemical compound if its molecule model shows different types of atoms.
- A substance is a chemical compound if its molecule model shows different types of atoms. (correct)
- A substance is always a chemical compound, regardless of its composition.
What is the correct chemical formula for a compound consisting of two aluminum atoms bonded with three oxygen atoms?
What is the correct chemical formula for a compound consisting of two aluminum atoms bonded with three oxygen atoms?
- $AlO_2$
- $Al_2O_3$ (correct)
- $Al_3O_2$
- $AlO$
Which of the following is a non-metal oxide?
Which of the following is a non-metal oxide?
- Calcium oxide ($CaO$)
- Aluminum oxide ($Al_2O_3$)
- Sulfur trioxide ($SO_3$) (correct)
- Potassium oxide ($K_2O$)
How many oxygen atoms are present in one molecule of sulfuric acid ($H_2SO_4$)?
How many oxygen atoms are present in one molecule of sulfuric acid ($H_2SO_4$)?
What elements are present in the compound with the formula $Na_2SO_4$?
What elements are present in the compound with the formula $Na_2SO_4$?
Which of the following compounds contains chlorine?
Which of the following compounds contains chlorine?
Which of the following formulas represents an acid?
Which of the following formulas represents an acid?
If a compound contains two sodium atoms bonded with one sulfur atom, what is its chemical formula?
If a compound contains two sodium atoms bonded with one sulfur atom, what is its chemical formula?
A compound is found to contain only potassium and oxygen. If the chemical formula is $K_2O$, what does this indicate about the composition of the compound?
A compound is found to contain only potassium and oxygen. If the chemical formula is $K_2O$, what does this indicate about the composition of the compound?
Sulfur trioxide has the chemical formula $SO_3$. Which statement accurately describes the molecule?
Sulfur trioxide has the chemical formula $SO_3$. Which statement accurately describes the molecule?
Consider the chemical formulas NaCl, $H_2O$, and $CO_2$. What do these formulas collectively represent?
Consider the chemical formulas NaCl, $H_2O$, and $CO_2$. What do these formulas collectively represent?
A scientist is analyzing a compound with the formula $NaNO_3$. Which elements are present in this compound?
A scientist is analyzing a compound with the formula $NaNO_3$. Which elements are present in this compound?
Which characteristic is common to all hydroxides?
Which characteristic is common to all hydroxides?
A compound has the chemical formula $Ca(OH)_2$. How many atoms of hydrogen are present in one molecule of this compound?
A compound has the chemical formula $Ca(OH)_2$. How many atoms of hydrogen are present in one molecule of this compound?
Lithium hydroxide has the chemical formula LiOH. Which statement best describes the composition of this compound?
Lithium hydroxide has the chemical formula LiOH. Which statement best describes the composition of this compound?
Why would a bottle containing sodium hydroxide (NaOH) include the chemical formula on its label?
Why would a bottle containing sodium hydroxide (NaOH) include the chemical formula on its label?
Flashcards
Chemical Formula
Chemical Formula
Shows the elements in a compound and their ratios.
What does NaCl represent?
What does NaCl represent?
One sodium (Na) atom and one chlorine (Cl) atom bonded together.
What does Hâ‚‚O represent?
What does Hâ‚‚O represent?
Two hydrogen (H) atoms and one oxygen (O) atom.
What does SOâ‚‚ indicate?
What does SOâ‚‚ indicate?
Signup and view all the flashcards
Kâ‚‚O
Kâ‚‚O
Signup and view all the flashcards
COâ‚‚
COâ‚‚
Signup and view all the flashcards
What are hydroxides (bases)?
What are hydroxides (bases)?
Signup and view all the flashcards
What is LiOH?
What is LiOH?
Signup and view all the flashcards
Chemical Compound?
Chemical Compound?
Signup and view all the flashcards
Metal Oxide?
Metal Oxide?
Signup and view all the flashcards
Non-metal Oxide?
Non-metal Oxide?
Signup and view all the flashcards
Acid?
Acid?
Signup and view all the flashcards
Salt?
Salt?
Signup and view all the flashcards
Sodium Sulfide?
Sodium Sulfide?
Signup and view all the flashcards
Sodium Chloride?
Sodium Chloride?
Signup and view all the flashcards
Study Notes
- Small numbers after an element's symbol indicate the number of its particles in the chemical formula.
- If there is no number after the element's symbol, it means there is only one particle in the formula.
Hydroxides
- Besides oxides, acids, and salts, hydroxides are another group of compounds, also known as bases or alkalis.
- Sodium and potassium hydroxides are strong bases.
- Watery solutions of bases neutralize acids.
- The (-OH) group is characteristic of bases, and its valence is (I).
- There can be one or more -OH groups in the chemical formula of a base.
Examples of Hydroxides
- Sodium hydroxide (NaOH) consists of 1 sodium, 1 oxygen, and 1 hydrogen atom.
- Calcium hydroxide (Ca(OH)2) consists of 1 calcium, 2 oxygen, and 2 hydrogen atoms.
Key takeaways
- Every compound is represented by its chemical formula.
- A chemical formula indicates the types and number of atoms of each element combined in a compound.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
