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Chapter 9

Chapter 9, Chemical Names and Formulas: vocab and key ideas

QuestionAnswer
What are monatomic ions? ions that consist of a single atom with a positive or negative charge (resulting from the loss or gain of oneor more electrons)
All the Group 1A ions have a +_ charge. (fill in the blank) 1
When the metals in Groups 1A, 2A, and 3A lose electrons, they form what? cations with positive charges equal to their group number.
What is the charge of a nonmetallic ion? negative
The charge of any ion of a Group A nonmetal is determined by what? subtracting 8 from the group number
What is a binary compound composed of? two elements
How do you write a formula for a binary compound? write the sysmbol of the cation and anoion, then add subscripts as needed to balance the charges.
How do you name a binary ionic compound? place the cation name first followed by the anion name.
Unlike a monatomic ion, a polyatomic ion is composed of what? more than one atom.
What is a binary compound? a compound composed of two elements.
What is an acid? a compound that contains one or more hydrogen atoms and produces hydrogen ions when dissolved in water.
What is a base? an ionic compound that produces hydroxide ions when dissolved in water.
What does the law of definite proportions state? in sample of any chemical compound, the masses of the elements are always in the same proportions.
Created by: jmhschemistry