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Chapter 5 test
Pysical Science Study Guide
| Question | Answer |
|---|---|
| Which of the following is a compound? | salt |
| One molecule of SiO2 contains the following combination of atoms | 1 Si and 2 O |
| Which of the following could be used to compare the size of a toms in a model? | space-filling |
| There are strong bonds between the atoms in a piece of quartz. These bonds give quartz | high melting point |
| The attraction between molecules tends to be ___ the attraction between ions | weaker than |
| Which molecules are most strongly attracted to one another? | water molecules |
| Sugar has a lower melting point than salt because it's made of | molecules |
| Which of the following does NOT form crystal at room temperature | water |
| Which of the following is a mixture? | soil |
| A chemical formula shows | numbers and types of atoms |
| Atoms sometimes form bonds to | become more stable |
| Copper atoms are held together by___bonds | metallic |
| Sodium has one electron in it's outer shell and chlorine has 7 electrons in it's outer shell. The stoms will form a____bond by ___their electrons. | ionic,transferring |
| Oxygen atoms have six electrons in their outer shell. When two oxygen atoms bond, they will form a __bond by ___ their electrons. | covalent,sharing |
| Ionic bond | creates compounds with very high boiling points & positive and negative ions are formed |
| covalent bond | creates compounds with low boiling points & usually occurs between nonmetals |
| metallic bond | allows copper to bend and conducts electricity & formed by atoms in metals packing electrons close together |
| An ionic compound of calcium and chlorine would be named | calcium chloride |
| A covalent compound made of one sulfur and two oxygen atoms would be named | sulfur dioxide |
| An ionic compound made of copper (Cu2+)and oxygen would be named | copper (II)oxide |
| The covalent compound N2O5 would be named | dinitrogen pentoxide |
| Because the overall charge in a compound must be ___, the charge of iron in Fe2O3 can be calculated as 3+ | 0 |
| in the compound Tio2, titanium has a charge of | 4+ |
| The chemical formula for an ionic compound of aluminum and chlorine is | AICI3 |
| The chemical formula for an ionic compound of potassium and oxygen | K2O |
| the ___ formula for a compound is written in the simplest whole number ratio of atoms | empirical |
| the chemical formula C6H12O6 would be the __ formula for glucose. | molecular, and chemical |
| all organic compound MUST contain | carbon |
| The atoms in organic molecules are held together by | covalent |
| the atoms of propane are held together by __ bonds. | single |
| a chemical formula with the pattern GnH2n+2 represent a(n) | alkane |
| Ethene differs from ethane in that it has a | both (a and b) b.) double bond |
| an alcohol MUST contain | -OH group |
| polypropylene would be called a __ because it contains a repeating pattern of propylene's. | polymer |
| a ___ is a polymer that contains any, different molecules of amino acids | protein |
| the polymer___ determine your genetic makeup. | DNA |
| a polymer of sugar molecules is called a(n) | carbohydrate |
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