PPT-Solution a. Copper is an element, which is a pure substance.

b A chocolatechip cookie does not have a uniform composition which makes it a heterogeneous mixture c The gases oxygen and nitrogen have a uniform composition in nitrox which makes it . Chapter 5.1 . BLM 5.1a, 5.1b. Chemicals and chemical Change. CHEMISTRY. – is the study of matter, its changes and its properties. MATTER. – is anything that has mass and takes up space. ATOM. – the smallest particle of matter. Beta Science . Mr. McMartin. Vocabulary. Element: a substance that cannot be separated or broken down into simpler substances by chemical or physical means.. Pure Substance: a sample of matter, either a single element or a single compound, that has definite chemical and physical properties.. Electrolysis . Process by which an electric current is passed through a substance to cause a chemical change.. The chemical change is one in which the substance loses or gains an electron.. Electrolysis. Grade 7. Matter. is anything that has mass and takes up space. Mass is the amount of matter in an object. . A. Solid . is matter that has a definite shape and volume. A . liquid. is matter that does not have a definite shape, but has a definite volume. Lightyear. ?. By: Michaela Ellis. Introduction. A . couple of days ago we found out that Buzz . Lightyear. was poisoned. But we don’t know who it was. It could have been anyone. We have a list of suspects that were at the dinner party and they are the Wicked Witch, Snow White, Daffy Duck, Shrek, Dorothy, Princess . Elements, Compounds, and Mixtures. Elements. pure substance that cannot be separated into simpler substances by physical or chemical means. . Compounds. Pure substance composed of two or more . different elements joined by chemical bonds.. Elements, Compounds, and Mixtures. Elements. pure substance that cannot be separated into simpler substances by physical or chemical means. . Compounds. Pure substance composed of two or more . different elements joined by chemical bonds.. Carmen Chadwick. Alkali Metals. Sodium-Na. T. he English word for which is soda. Used in medicine, agriculture and photography. Also used in street lights, soap, batteries, table salt (. NaCl. ) (a compound vital to life) , and glass. 2. What are the properties/characteristics of nonmetals?. 3. What are the properties/characteristics of metalloids?. 4. What is a pure substance? Is compound or an element?. 5. What is a mixture?. What is an element?. A element is a pure substance made of one type of atom. Elements are divided into metals and non-metals. Examples of non-metal elements include carbon, oxygen, hydrogen, and nitrogen. Learning targets:. Physical states of matter. Physical changes and chemical changes. 1.1 Physical States of Matter. Choice = Fixed / Variable?. Teacher Notes: PhET sim. Shape. Volume. Liquid. Variable. Purity, formulations and chromatography. Chromatography. Can be used to separate mixtures and help. identify substances.. Involves a mobile phase. (e.g. water or ethanol) and a stationary phase (e.g. chromatography paper). . Elements v. Compounds. Element – Oxygen . Compound – Carbon Dioxide. The Letters of Life. Just like words are made up of letters, compounds are made up of elements. Water. Baking Soda. Capsaicin. Grade. Objective. . Outcomes. 7-9. To be able to evaluate alternative biological methods of metal extraction, given appropriate information.. To be able to identify different methods of metal extraction from metal ores.