Year 8 Matter 5.3-5.4 Checklist & Glossary PDF

**[Year 8 Matter 5.3-5.4]** **[Checklist]** **Objectives** Date: ------------------------- ---------------------------------------------------------------------------...

**[Year 8 Matter 5.3-5.4]** **[Checklist]** **Objectives** Date: ------------------------- ------------------------------------------------------------------------------------------------------------- ----- ----- -- RAG RAG RAG Elements State what an element is Recall the chemical symbols of 16 elements Use observations from experiments to explain why a substance must be an element Atoms State what atoms are Represent atoms using particle diagrams Compounds State what a compound is Represent molecules, elements, mixtures, and compounds using particle diagrams Use particle diagrams to classify a material as an element, mixture, or compound Chemical Formulae Use particle diagrams to classify a material as an element, mixture, or compound, and as molecules or atoms Name compounds using their chemical formulae Use chemical formulae to name the elements present and determine their relative proportions Represent atoms, molecules, elements, mixtures, and compounds using particle diagrams Polymers Describe the structure of a polymer Represent polymers using particle diagrams Explain how polymer properties depend on their molecules The Periodic Table State what the groups and periods of the Periodic Table tell you about the elements Use data to describe a trend in physical properties Use physical patterns in data for physical properties to estimate a missing value for an element The Elements of Group 1 State the properties and reactivity of the Group 1 elements Use data and observations to describe trends and predict properties of Group 1 elements Describe the reactions of any Group 1 element The Elements of Group 7 State the properties and reactivity of the Group 7 elements Use data and observations to describe trends and predict properties of Group 7 elements Describe the reactions of any Group 7 element The Elements of Group 0 State the properties and reactivity of the Group 0 elements Use data and observations to describe trends and predict properties of Group 0 elements Describe the reactions of any Group 0 element **[Glossary]** **Key term** **Definition** --------------------- --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- alkali metals The elements in the left column of the Periodic Table including lithium, sodium, and potassium. Also called Group 1. atom The smallest part of an element that can exist. carbonate A compound that includes carbon and oxygen atoms, as well as a metal element. There are three atoms of oxygen for every one atom of carbon. chemical formula A formula that shows the elements present in a compound and their relative proportions. chemical properties Features of the way a substance reacts with other substances. chemical symbol A one- or two-letter code for an element that is used by scientists in all countries. compound Pure substances made up of atoms of two or more elements, strongly joined together. element(s) Substances that all other materials are made up of, and which contain only one type of atom. An element cannot be broken down into other substances. group A column of the Periodic Table. The elements in a group have similar properties. Group 0 Group 0 is on the right side of the Periodic Table. Group 0 elements include helium, neon, argon, and krypton. Also called the noble gases. Group 1 The elements in the left column of the Periodic Table, including lithium, sodium, and potassium. Also called the alkali metals. Group 7 Group 7 is second from the right of the Periodic Table. Group 7 elements include fluorine, chlorine, bromine, and iodine. Also known as the halogens. halogen The name for elements in the group that is second from the right of the Periodic Table. Halogens include fluorine, chlorine, bromine, and iodine. Also known as the Group 7 elements. hydroxide A compound that includes hydrogen and oxygen atoms, as well as a metal element. There is one atom of oxygen for everyone atom of hydrogen. molecule A group of two or more (up to thousands) atoms strongly joined together. Most non-metal elements exist either as small or giant molecules. natural polymer A polymer made by plants or animals. Examples include starch, wool, cotton, and rubber. nitrate (chemistry) A compound that includes nitrogen and oxygen atoms, as well as a metal element. There are three atoms of oxygen for every one atom of nitrogen. noble gases The name for elements in the group on the right of the Periodic Table. Noble gases include helium, neon, argon, and krypton. Also known as the Group 0 elements. period A row of the Periodic Table. There are trends in the properties of the elements across a period. Periodic table A table which shows all the elements arranged in columns and rows. Elements with similar properties are grouped together. physical properties Features of a substance that can be observed without changing the substance itself. polymer A molecule made by joining up thousands of smaller molecules in a repeating pattern. Plastics are synthetic polymers, and starch is a natural polymer. sulfate A compound that includes sulfur and oxygen atoms. There are four atoms of oxygen for every one atom of sulfur. synthetic polymer A polymer made by people, often in a factory. Examples include poly(ethene) and poly(propene). trend A pattern in properties, such as an increase or decrease. unreactive Elements that take part in few chemical reactions are unreactive. **[Textbook Pages]** The textbook is available through Kerboodle. See the 'Kerboodle Help' PowerPoint (on SMHW) for more information about how to log in. **Textbook pages 68-87**