Home / nature / nature of matter powerpoint Nature of matter powerpoint 18/08/2021 Presentation on theme: "The Nature of Matter.You watching: Nature of matter powerpoint Notes 2-1 DESCRIBING MATTER."— Presentation transcript: 1 The Nature of Matter 2 Notes 2-1 DESCRIBING MATTER 3 Matter Anypoint that has mass and takes up area Substance- single type of matter that has a certain make-up and also certain properties -Example: Salt or sugar -Non-Example: Muffin batter (the ingredients have the right to vary) 4 Physical Properties of Matter Can be oboffered without changing into another substance Examples: Freezing allude, melting allude, thickness, texture, shade, flexibility, solubility in water 5 Chemical Properties of Matter Ability to change right into a different substance Examples: flammability, rusting, tarnishing, increasing of bread in baking procedure 6 Elements Pure substances that cannot be damaged down into any kind of other substance Simplest substances Is determined by its particular physical and chemical properties Examples: Carbon, Oxygen, Gold, Silver, Aluminum 7 Atoms Basic particle that renders up all aspects Having various atoms offers facets their distinctive properties Atoms have a nucleus consisted of of positively charged prolots and neutrally charged neutrons, and they are surrounded by a cloud of negatively charged electrons 8 Modeling an Atom Pencil “lead” is made of largely graphite, a form of carbon. Two methods to version atoms supplied in this presentation are presented here for carbon. 9 Chemical Bonds Atoms integrate by chemical bonds (a pressure of attraction between the electrons of 2 or even more atoms) Often form molecules- teams of 2 or even more atoms held together by chemical bonds Examples: H 2 O, O 2, CO 2 10 Modeling Molecules How many atoms are in each of these molecules? 11 Compounds Pure substance made up of 2 or even more elements chemically combined in a collection ratio Represented by a chemical formula which mirrors the aspects in the compound and the proportion of atoms When elements integrate to create compounds, they have actually distinctive properties from those of the ununified aspects -Example: Hydrogen alone is a really combustible gas, Oxygen alone is a major supporter of combustibility, yet as soon as combined in the set 2:1 proportion H 2 O, they put out fires! 12 Ratios A proportion compares two numbers. It tells you just how much you have actually of one item compared to just how much you have actually of an additional. For example, a cookie recipe calls for 2 cups of flour to eexceptionally 1 cup of sugar. You deserve to compose the proportion of flour to sugar as 2 to 1, or 2:1. The chemical formula for rust, a compound made from the elements iron (Fe) and oxygen (O), might be composed as Fe 2 O 3. In this compound, the ratio of iron atoms to oxygen atoms is 2:3. This compound is different from FeO, a compound in which the ratio of iron atoms to oxygen atoms is 1:1. 13 Ratios Practice Problem What is the proportion of nitrogen atoms (N) to oxygen atoms (O) in a compound with the formula N 2 O 5 ? Is it the very same as the compound NO 2 ? Exordinary. N 2 O 5 has two nitrogen atoms for eextremely five oxygen atoms.See more: Nature Republic Hawaiian Fresh Clear Toner Ingredients List, Nature Republic Hawaiian Fresh Clear Toner 500Ml Both N 2 O 5 and also NO 2 are made up of just nitrogen atoms and also oxygen atoms. However, the 2 compounds are various because NO 2 includes one nitrogen atom for every two oxygen atoms. 14 Mixtures Made up of 2 or more substances that are not chemically linked Differ from compounds bereason they perform not need to have actually a set proportion, and each substance in mixture keeps its individual properties Examples: Air, Soil, Salt water 15 Heterogeneous Mixtures Hetero = different Can view different parts of mixture Examples: Soil, Salad Who can think of other examples? 16 Homogeneous Mixtures Homo = exact same Can’t see various components of mixture, evenly mixed Examples: Sugar/water solution, Air Who have the right to think of other examples? 17 Separating Mixtures Compounds are tough to separate Mixtures are easy to sepaprice given that each component keeps its own properties Look at number 10 on web page 66, it mirrors different ways to separate a mixture including using a magnet, filtering, distilling, and evaporating 18 LET’S REVIEW!! What are some examples of chemical properties of matter? Rusting, flammcapacity, bread baking What are some examples of physical properties of matter? Density, melting, freezing, shade, flexibility, hardness 19 LET’S REVIEW!! What 2 things does a chemical formula show? The aspects present and the ratio of atoms Give an example of an aspect. Carbon, Oxygen, Nitrogen, Gold, Silver, and so on. 20 Notes 2-2 Changes in Matter 21 Physical Changes Alters form or appearance of issue however does NOT adjust matter into a various substance Examples: -Changes of state (solid to liquid, or liquid to gas, etc.) -Changes in shape or develop (dissolving, chopping, cutting, bending, breaking, etc) 22 Chemical Changes A adjust in matter that produces one or even more brand-new substances Chemical adjust = chemical reaction New substances have actually properties different from original substances Examples: -burning of natural gas on gas range (combustion) -rusting (oxidation) 23 Chemical Change 24 Law of Conservation of Matter Matter is neither produced nor ruined in any type of physical or chemical readjust No mass is lost, because throughout a chemical readjust, atoms are not shed or gained, simply rearranged. 25 Conserving Matter The concept of atoms defines the legislation of conservation of issue. For eextremely molecule of methane that burns, 2 molecules of oxygen are used. The atoms are rearranged in the reactivity, but they carry out not disappear. 26 Notes 2-3 Energy and Matter 27 ENERGY Who remembers the meaning of Energy? The Ability to carry out WORK! 28 ENERGY All chemical and physical alters incorporate a readjust in power 29 Law of Conservation of Energy Energy is neither created nor destroyed It is just transformed (readjusted from one form to another) 30 Forms of Energy Forms of energy that encompass transforms in issue are: Thermal Energy, Chemical Energy, Electromagnetic Energy, and also Electric Energy 31 Thermal Energy Temperature = average power of random movement of pshort articles of matter Thermal Energy = complete energy in all particles in an item Thermal energy is regarded temperature because the power always flows from warm issue to cool issue Endothermic Change = energy is soaked up Ex: Melting Exothermic Change = power is released Ex: Combustion 32 Chemical Energy Stored in Chemical Bonds in between atoms Bonds are broken and also new bonds created Ex: in foodstuffs, gas for cars, cells Typically involve revolutions in between chemical power and thermal power, prefer when burning a complement 33 Electromagnetic Energy Travels with space as waves Ex: Visible light, radiowaves, microwaves, x-rays, UV rays, infrared rays Chemical transforms deserve to offer off light (electromagnetic energy) Microwaves thaw frozen food (physical change) 34 Electrical Energy Energy of electrically charged particles relocating from one location to an additional Ex: electrons move from one atom to an additional in many kind of chemical transforms. Ex: using electrolysis to separate water molecules right into oxygen gas and hydrogen gas 35 Potential Vs Kinetic POTENTIAL ENERGY: Energy waiting to be offered Ex: Food you eat KINETIC ENERGY: Energy of Motion (Energy being used) Ex: You taking notes! Ex: You taking notes! 36 Transforming Energy Example 1: Burning -Chemical readjust that transdevelops chemical energy and also releases it as thermal power (heat) and electromagnetic power (light) 37 Transcreating Energy Example 2: Photosynthesis -Plants transdevelop electromagnetic energy from the sun right into chemical power (sugar for plants) 38 Transdeveloping Energy Example 3: You Try! What energy transformations take place when you ride a bike? Tright here is potential power in the food you eat. Your cells transcreate food right into chemical energy your body deserve to usage. Chemical energy is transdeveloped to kinetic energy of moving muscles and also thermal energy provided off as heat.