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Chemistry Test revie
| Question | Answer |
|---|---|
| Chemists classify an element as metal based on what physical properties? | Hardness, shineness, maelleability, and ductibility |
| Most metals are solids at room temperature because they have very low melting points - True or False | False |
| The process of reaction and wearing away of a metal element | Corrosion |
| A characteristic of those metals that are attracted to magnets or can be made into magnets | Magnetic |
| A term used to describe a material that can be pounded or rolled into shapes | Malleable |
| A term used to describe a material that can be pulled out, or drawn, into a long wire | Ductile |
| Why are most metals called good conductors | Because conductors can transmit heat and energy |
| True/False Metals show a wide range of chemical properties | True |
| What is a mixture of metals called | Alloy |
| Bronze is a mixture of what two metals? | Copper and Tin |
| How do the properties of each family of metals change as you move across the table | Metals tend to become LESS REACTIVE as you move from left to right across the table |
| What is true about alkali metals? | 1)Never found as elements but only in compounds2)As elements, they are soft and shiny3)They are extremely reactive |
| What are the two most important alkali metals? | Pottasium and sodium |
| What is true about alkaline earth metals | 1)They are good conductors of electricity2)They are never found uncombined in nature |
| What are the two most important common alkaline earth metals? | Magnesium and calcium |
| What elements are a transitional metal | Gold, Iron, and Copper |
| True/False The transitional metals are fairly stable, reacting slowly or not at all with air and water | True |
| What are the most familiar metals in groups 13-16? | Aluminum, Tin, and Lead |
| Lanthanides and actinides are found in periods 6 and 7 within the what? | Transition metals |
| Where are the lanthanides and actinides placed on the periodic table/ | Lantanides are on the top row and actinides are on the bottom row |
| Uranium has an atomic number of 92. How were all elements with atomic numbers higher than 92 created | They were created by Scientists |
| What is on the concept map about metals from top to left and around? | Metals, Aline Metals, Alkie Metals, Transition Metals, Metals in Mixed Groups, Lathanides and actinides |
| The elements that lack most of the properties of metals are called | Non Metals |
| Where are the nonmetals found on the periodic table | On the far right of the periodic table |
| True or False-Many of the nonmetals are gases at room temperature | True |
| What are two things that are true about physical properties in non metals? | Solid nonmetals are brittleThey usually have lower densities than metals |
| Except for group 18 elements, most nonmetals readily form what? | Compounds |
| What happens when metals and nonmetals react? | Electrons move from the metal atoms to the non metal atoms |
| What is a molecule composed of two atoms called? | Diatomic Molecule |
| What is Group 14 also known as? | Carbon Family |
| The only nonmetal in group 14 is called what? | Carbon |
| All living things contain what kind of compound? | Compounds that are made from long chains of carbon atoms |
| What are the nonmetals in Group 15? | Nitrogen and phosphorus |
| Air is almost 80% what? | Nitrogen |
| What are three things that are true about oxygen? | The oxygen you breathe is a diatomic moleculeOxygen is the most abundant element in Earth's crustOxone collects in a layer in the upper atmosphere |
| True/False-Most halogens are dangerous to humans? | True |
| What two things are true about the noble gases? | They are chemically very stable and unreactiveThey are used in glowing electric lights |
| What Group is the Carbon Family and what are the nonmetals in the family? | Group 14/Carbon |
| What Group is the Nitrogen Family and what are the nonmetals in the family? | Group 15/Nitrogen, phosphorus |
| What Group is the Oxygen Family and what are the nonmetals in the family? | Group 16/ Oxygen,Sulfur, Selenium |
| What Group is the Halogen famiy and what are the nonmetals in the family? | Group 17/Flurrine, Chlorine, Bromine, and iodine |
| What Group is the Noble Gases and what are the nonmetals in the family? | Group 18/ They are all nonmetals |
| Where on the periodic table is hydrogen found? | Upper Left Corner |
| How many protons and electrons does a hydrogen atom usually contain? | 1 Proton, and 1 Electron |
| Why cant hydrogen be grouped in a family? | It doesn't combine with anything |
| True or False - Most of the hydrogen found on Earth is combined with oxygen in water | True |
| What are metalloids? | Metalloids have some characteristics of metals and nonmetals |
| How many metalloids are found in the periodic table? | 7 |
| What is the most common metalloid? | Silicon |
| What is the most useful property of the metalloids? | Varying abilities to conduct electricity |
| What are semiconductors? | They are substances that can conduct electricity, under some conditions, while under other conditions can not. |
| Where are semiconductors used? | Making computer chips, transistors, and lasers |
| What is a particle outside of an atom | Electron |
| A horizontal row across the periodic table | Period |
| The number of protons in the nucleus of an atom is called? | |
| What is on the concept map about metals from top to left and around? | Metals, Aline Metals, Alkie Metals, Transition Metals, Metals in Mixed Groups, Lathanides and actinides |
| The elements that lack most of the properties of metals are called | Non Metals |
| Where are the nonmetals found on the periodic table | On the far right of the periodic table |
| True or False-Many of the nonmetals are gases at room temperature | True |
| What are two things that are true about physical properties in non metals? | Solid nonmetals are brittleThey usually have lower densities than metals |
| Except for group 18 elements, most nonmetals readily form what? | Compounds |
| What happens when metals and nonmetals react? | Electrons move from the metal atoms to the non metal atoms |
| What is a molecule composed of two atoms called? | Diatomic Molecule |
| What is Group 14 also known as? | Carbon Family |
| The only nonmetal in group 14 is called what? | Carbon |
| All living things contain what kind of compound? | Compounds that are made from long chains of carbon atoms |
| What are the nonmetals in Group 15? | Nitrogen and phosphorus |
| Air is almost 80% what? | Nitrogen |
| What are three things that are true about oxygen? | The oxygen you breathe is a diatomic moleculeOxygen is the most abundant element in Earth's crustOxone collects in a layer in the upper atmosphere |
| True/False-Most halogens are dangerous to humans? | True |
| What two things are true about the noble gases? | They are chemically very stable and unreactiveThey are used in glowing electric lights |
| What Group is the Carbon Family and what are the nonmetals in the family? | Group 14/Carbon |
| What Group is the Nitrogen Family and what are the nonmetals in the family? | Group 15/Nitrogen, phosphorus |
| What Group is the Oxygen Family and what are the nonmetals in the family? | Group 16/ Oxygen,Sulfur, Selenium |
| What Group is the Halogen famiy and what are the nonmetals in the family? | Group 17/Flurrine, Chlorine, Bromine, and iodine |
| What Group is the Noble Gases and what are the nonmetals in the family? | Group 18/ They are all nonmetals |
| Where on the periodic table is hydrogen found? | Upper Left Corner |
| How many protons and electrons does a hydrogen atom usually contain? | 1 Proton, and 1 Electron |
| Why cant hydrogen be grouped in a family? | It doesn't combine with anything |
| True or False - Most of the hydrogen found on Earth is combined with oxygen in water | True |
| What are metalloids? | Metalloids have some characteristics of metals and nonmetals |
| How many metalloids are found in the periodic table? | 7 |
| What is the most common metalloid? | Silicon |
| What is the most useful property of the metalloids? | Varying abilities to conduct electricity |
| What are semiconductors? | They are substances that can conduct electricity, under some conditions, while under other conditions can not. |
| Where are semiconductors used? | Making computer chips, transistors, and lasers |
| What is a particle outside of an atom | Electron |
| A horizontal row across the periodic table | Period |
| The number of protons in the nucleus of an atom is called? | Atomic Number |
| What are the elements in the first row of the rare earth elements of the periodic table | Lanthanides |
| What chart shows the repeating properties of elements? | Periodic Table |
| Chemical Properties include whether or not a substance does what? | Burns, Rust, Reacts with water |
Created by:
sshatch