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Description
Flashcards by Sabaa Khan, updated more than 1 year ago
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Created by Sabaa Khan
about 5 years ago
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| Question | Answer |
| Module 6.1: Elements | By: Sabaa Khan 8B |
| Define atoms and what type of microscope it can be seen with. | Atoms: Building blocks of every substance on the universe Can only be seen with a scanning tunnelling microscope (STM) |
| What is an element? | A substance that is just made up of one type of atom. |
| What are properties? | A unique set of characteristics that scientists refer to while talking to substances. |
| List the properties of metallic elements: | 1) Lustrous 2) Solid at room temperature 3) Good conductors 4) Malleable 5) Ductile |
| Give 3 examples of basic metallic elements: | 1) Iron 2) Gold 3) Mercury |
| What are the basic properties of non-metallic elements? | 1) Dull 2) Insulator 3) Brittle |
| Give 3 examples of non-metallic elements: | 1) Iodine 2) Sulfur 3) Neon (Krypton as well for Mariam) |
| How many elements are there and how many are natural? | 118, 98 are natural and 20 are artificial. |
| Where are the elements shown and how are they are organised? | The periodic table and they are organised according to weight, from lightest to heaviest. |
| What is a chemical symbol? Give an example: | Either a shorter version for the element straight from the element or from their Latin name. Eg. Magnesium = Mg Tungsten = Wolfram = W |
| What are three ways atoms can exist? | 1) Single atoms 2) A cluster of atoms also known a molecules 3) Large grid-like structures called crystal lattices |
| Define monatomic: | An element made up of many individual atoms known as monatomic |
| Give examples of monatomic elements: | Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xexon (Xe), Radon (Rn) |
| What are molecular elements? | Clusters of two or more atoms bonded together. For example N2 |
| What is a crystal lattice? | A large grid-like structure that repeats the same arrangement of atoms over and over. |
| Metallic Lattices: What are they? | The atoms in metals form lattice. Its structure makes them dense, solid and strong and can be hammered because it is weakly bonded. |
| What are non-metallic lattices? | Only a few non-metallic forms lattices such as silicon |
| Yes, I used the same picture because my media is full and i wasted 1 hour trying to solve it and disclaimer it didn't work... |
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