H Chemistry Module 6 Word Scramble
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| Question | Answer |
| What is a chemical bond? | A chemical bond is a force that holds two atoms together. Cation (positive ion) and Anion (negative ion) |
| Why is a cation positively charged? | A cation is positively charged because it gives away electron/s. Keep in mind that the number of protons stays the same! |
| Why is an anion negatively charged? | An anion is negatively charged because it receives electron/s. Keep in mind that the number of protons stays the same! |
| Removal of an electron from a neutral atom will need energy. How much? | 498 kj/mol is needed. |
| What groups of metals are the most reactive? | Group 1 and 2 metals are the most reactive because they have 1 or 2 valence electrons respectively, but some metals from group 13 also form cations. |
| For transition metals, it's hard to predict the number of electrons lost. What is the typical charge? | They typically have a 2+ or 3+ charge. |
| For transition metals, what is the outer energy level? | It is ns^2 with the n=period # |
| What is an ionic bond? | An ionic bond is the electrostatic force that holds oppositely charged particles together. |
| What are ionic compounds? | Ionic compounds are compounds that contain ionic bonds. |
| If ionic bonds occur between metals and the nonmetal oxygen, what forms? | Oxides form. |
| What are most other ionic compounds called? | They are called salts. |
| What is a binary ionic compound? | A binary ionic compound is a compound that contains two different elements: metallic cation and nonmetallic anion. |
| The strong attraction with cations and anions in an ionic compound result in the formation of what? | This results in the formation of a crystal lattice, which is a 3D geometric arrangement of particles. |
| The ions that form minerals are bonded together in what? | They are bonded together in a crystal lattice. |
| How much of all minerals are silicates? | 1/3 of all minerals are silicates. |
| What is a physical property of transition metals? | Transition metals have bright colors. |
| What are three physical properties of ionic crystals? (CoHMB) | C - ionic solids do not Conduct electricity. H - Hard to break M - high Melting point B - high Boiling point |
| What happens when ionic compounds are melted or dissolved in liquid? | They produce electric currents, thus they are great conductors of electricity. |
| What are electrolytes? | Electrolytes are ionic compounds whose aqueous solution produces an electric current. |
| During every chemical reaction, energy is either absorbed or released. What is an endothermic chemical reaction? | This is a chemical reaction in which energy is absorbed. |
| What is an exothermic chemical reaction? | This is a chemical reaction in which energy is released. Ex. ionic compounds |
| Ionic compounds are made of ions arranged in what pattern? | Repeating pattern |
| What is a monatomic ion? | A monatomic ion is a one atom ion. |
| What is a polyatomic ion? | A polyatomic ion is an ion made up of more than one atom. |
| What elements have more than one possible charge? | Elements in groups 13 and 14 and most transition metals have more than one possible charge. |
| What is an oxyanion? | An oxyanion is a polyatomic ion made of an element, usually a nonmetal, bonded to one or more oxygen atoms. |
| What charge must a formula have? | 0/neutral |
| In a formula, what comes first? | Metal cation followed by nonmetal anion |
| For monatomic cations, how do you name them? | Use the element name. |
| For monatomic anions, how do you name them? | Use the root of the element name + suffix -ide |
| For elements w/ more than one possible charge, how do you name them? | Use the Roman numeral in parenthesis after the name of the cation. |
| When a compound contains a polyatomic ion, what should you write? | You should use the name of the polyatomic ion in place of the anion or cation. |
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