44.1 Studying Matter (Pages 136-148) Homework: Page 148 # 1-5, 8Key concepts: (Page148)When studying matter, it is important to know the location of safety equipment in your classroom and the meanings of the safety icons and WHMIS symbols.Matter can be classified according to its composition, as mixtures or pure substances.
5An element is a pure substance that cannot be broken down into simpler substances through physical or chemical methods.A compound is a pure substance that is composed of two or more elements that are chemically combined. A compound can be broken down into its elements only by chemical methods.The production and use of new chemicals can have both negative and positive consequences. Benefits must be weighed against negative consequences
6Classification of Matter: Copy down Figure 4.3: Matter Mixture Pure SubstancesMechanical Mixture Solution Element Compound2. What is matter?Matter is anything that has mass and occupiesspace.
7Particle Theory of Matter: 3. List the particle Theory of Matter.All matter is made up of tiny particles.Each pure substance has its own kind of particle which is different from the particles of other pure substances.Particles attract each other.Particles are always moving.Particles at a higher temperature move faster, on average, than particles at a lower temperature.
8Mixture Pure substances 4. What are two classification of matter according to the particle theory of matter? List examples of eachMatterMixture Pure substancesMatter that contains more than Matter that containsthan one kind of particle only one kind of particle.Examples:Water is a pure substance but salt water is a mixture of saltdissolved in water.Oxygen gas is a pure substance but the air we breathe is amixture of gases that includes nitrogen, oxygen, carbon dioxideand other components.
95. What are the two types of pure substances 5. What are the two types of pure substances? Describe each one and list examples of each.Pure substancesElement Compoundis a pure substance that cannot be is a pure substance that is madebroken down further by chemical or of two or more different elementsphysical methods that are chemically combinedzinc, copper, gold, helium salt (sodium chloride), water
106. Differentiate between a compound and a mixture? A compound has two or more different elements that are chemically combined. While a mixture has two or more particles or has more than one kind of particles.
127. List different ways on how to separate mixtures. filtering or sifting,distillation, evaporation,use of magnets, and by hand
139. Name an element that is part of your everyday life, and describe how you use it. Gold/Silver: wear as a part of jewelleryOxygen: inhaled and transported by ourrespiratory system
14Chemistry, Society, and the Environment: 10. Summarize some of the important issues related to the use and production of chemicals by completing the table below.Issue- Industrial Waste ProductionUse of Fertilizers and PesticidesConsumer Products Packaging/DisposalApplication-ManufacturingFarming/Aquaculture/HorticultureAdvantage or Disadvantage- Computer Hardware Disposal