16086095
Descripción
Fichas por Those Crepes Are Safe Fam ツ, actualizado hace más de 1 año
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Creado por Those Crepes Are Safe Fam ツ
hace alrededor de 6 años
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| Pregunta | Respuesta |
| What is the periodic table? | The periodic table is a table of all known elements in order of atomic number |
| What is a period in the periodic table? | A horizontal row of elements in the periodic table |
| What is a group in the periodic table? | Vertical column of elements in the periodic table |
| What is an atomic number? | Number of an element in the periodic table |
| What are physical properties? | Physical properties are those that can be observed without changing the identity of the substance; a property that is measurable. Examples are: Colour, Density, Hardness, Smell, Freezing point, Boiling point, Melting point |
| What are chemical properties? | Chemical properties are those that become evident during or after a chemical reaction. Examples are: Toxicity, Reactivity, PH, Flammability |
| What are alkali metals? | The group 1 family of elements, which all react quickly with water |
| What are halogens and where are they found in the periodic table? | Halogens are non-metal elements to the right of the periodic table, they are in group 7 |
| What is a noble gas? | An unreactive gas in group 0 (or 8) of the periodic table. |
| What is melting point? | Temperature at which a solid changes state to a liquid. |
| What is density? | Mass of a material per unit volume. |
| What does toxic mean? | Poisonous |
| What is an atom? | The smallest particle of a chemical element that can exist. Makes up everything (except energy) |
| What is an element? | A substance made up of only one type of atom |
| What is a compound? | Atoms of elements combine to from compounds; these compounds have different properties to the elements they contain |
| What is a chemical formula? | Chemical symbols and numbers that show which elements, and how many atoms of each a compound is made up of |
| What is a ratio? | Link between two values - for example if the first value is twice the second value, the ratio is 2:1 |
| What is a product? | A product is a substance made in a chemical reaction |
| What is a reactant? | A starting substance in a chemical reaction |
| What is a polymer? | A large molecule made up of a very long chain of smaller molecules |
| What is a monomer? | A small molecule that becomes chemically bonded to other monomers to form polymers |
| What is starch? | A large molecule made by plants as a form of food storage |
| What is a polythene? | Polyethylene, the most common plastic, which is used for carrier bags |
| What is cellulose? | Larger sugar molecule made by plants for cell walls |
| What are ceramics? | An inorganic, non-metallic solid prepared by heating and then cooling substances such as clay |
| What are composites? | A material made from two or more different materials, each of these often having very different properties |
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