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Phys Sci Ch 6
Beaver Local 6
| Question | Answer |
|---|---|
| The forces that hold 2 or more ions together in a compound | Chemical Bonds |
| The way the compound atoms are bonded to make a compound | Chemical Structure |
| The distance between the nuclei of two bonded atoms | Bond Length |
| When a compound has 3 or more atoms, this is the angle formed by 2 bonds to the same atom | Bond Angle |
| What does a ball-and-stick model help you understand? | A ball and stick model helps you understand a compound's STRUCTURE by showing you how the atoms or ions are ARRANGED in the compound (bond angle and length) |
| How are structure formulas created? | By using the chemical symbols of the atoms |
| This type of model shows the relative size of atoms in a compound but not bond lengths | Space-filling model |
| What is an advantage of using a ball-and-stick model to represent a compound? | It shows the bond length and bond angle |
| What is an advantage of using a structural formulas model to represent a compound? | It shows the chemical symbols of the compound |
| What is an advantage of using a space-filling model to represent a compound? | It shows the relative sizes of atoms in the compound |
| What determines the properties of a compound? | The chemical structure |
| T or F: Strong bonds make the melting point and boiling point of minerals very LOW | F: HIGH |
| T or F: A very RIGID chemical structure result in HARD, inflexible minerals | T |
| Do sugar molecules have a stronger attraction to each other than water molecules? | Yes, that is what assists its physical property of "solid" |
| Do dihydrogen sulfide, a gas, have stronger or weaker molecule attractions to each other than water? | Weaker |
| T or F: Higher melting and boiling points indicate that molecules have a stronger attraction to each other? | T |
| When do atoms bond? | When their valence electrons interact |
| When do atoms typically join to form bonds? | To form a stable electron configuration (full outer shells) |
| What are the two basic kinds of chemical bonds? | Ionic bonds and Covalent bonds |
| The attractive force between oppositely charged ions, which form when electrons are transferred from one atom to another | Ionic Bond |
| Bonds that are formed by the TRANSFER of electrons | Ionic Bonds |
| When a bond forms where one atom gains and another atom loses electron(s); what type of bond occurs | Ionic Bond |
| T or F: The result of an ionic bond is one NEGATIVELY charged ion AND one POSITIVELY charged ion | T |
| What "state" are ionic bonds in at room temperature? | Solid |
| Are ionic bonds (NaCl) a network of ions or a molecule? | A network of ions |
| What occurs when ionic bonds are melted or dissolved in water? | They conduct electricity |
| What are the melting and boiling points of ionic bonds? (example: NaCl) | very high |
| A bond formed when atoms SHARE one or more pairs of electrons | Covalent Bond |
| Water and sugar are examples of what type of bond? | Covalent Bond |
| Table Salt or Sodium Cloride (NaCl) is an example of what type of bond? | Ionic Bond |
| Covalent bonds usually form between what type of atoms? | Nonmetal atoms |
| Covalent bonds are in what "state" at room temperature? | solid, liquid, or gas |
| What occurs to the valence electrons in a covalent bond? | The valence electrons are SHARED |
| Why do most covalent compounds not conduct electricity? | Because they are not "charged" |
| What holds two covalently bonded atoms together? | A SHARED electron |
| Bonds in which electrons are shared equally are known as what? | Nonpolar Covalent Bonds |
| An unequal sharing of electrons form what kind of covalent bond? | Polar Covalent Bond |
| Can copper, when in a solid state, conduct electricity? | Yes |
| Atoms that have ionic and covalent bonds (transfer and share electrons) | Polyatomic Ions |
| Atoms that are covalently bonded (share electrons) that have a positive or negative charge as a group | Polyatomic Ions |
| How are ionic compounds formed? | Ionic compounds are formed by the strong attraction between oppositely charged particles, cations (positive ions) and anions (negative ions) |
| What forms when an atom of the element sodium (Na) loses an electron? | A sodium ion, Na+ |
| What charge are ions of Group 1? | 1+ |
| What charge are ions of Group 2? | 2+ |
| What must the total charge of an ionic compound be? | 0 |
| What does the Roman Numeral in iron (III) oxide represent? | The cations charge (+3) |
| How are covalent compounds named? | By using the Prefix system (mono/di/etc) |
| How are ionic compounds named? | By using the Roman Numeral system (I/II/III etc) |
| Using the prefix system name the following compound: N2O4 | dinitrogen tetraoxide |
| This formula tells us the smallest whole-number ratio of atoms that are in a compound | Empirical Formula |
| What is the empirical formular for water? | H2O |
| What does the formula H2O tell us? | That the ratio of hydrogen atoms to oxygen atoms is 2:1 |
| What tells us how many atoms are in one molecule of the compound? | Molecular Formula |
| What is a covalently (share) bonded compound that contains CARBON? | Organic Compound |
Created by:
kjones0722
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