Sarah's Science Review Powerpoint
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Density is a physical property that is defined as mass divided by volume. It can be used to compare unknown solids by measuring their densities. Density can be measured using a balance to find mass and a ruler or graduated cylinder to find volume. A suspension is a type of mixture that is distinguished by having distinct layers and particles that can be seen settling. A mixture is a physical combination of substances that can be separated physically, while a compound is a chemical combination that can only be separated chemically and exists in fixed ratios with unique properties.
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This document defines key chemistry concepts such as elements, compounds, mixtures, and the different types of mixtures. It discusses homogeneous mixtures like solutions, and heterogeneous mixtures like colloids. It also covers physical properties including viscosity, conductivity, malleability, melting and boiling points. Finally, it discusses processes such as filtration, distillation, evaporation, and the differences between chemical and physical changes.Science chapter 2!
Science chapter 2!lyndseyb
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This document discusses matter and its properties. It defines matter as either pure substances or mixtures. Pure substances are either elements or compounds, while mixtures can be homogeneous or heterogeneous. The document then discusses several physical properties of matter like viscosity, conductivity, malleability, hardness, density, melting point, and boiling point. It explains processes like distillation, filtration, evaporation, and electrolysis that are used to separate mixtures based on these physical properties. The review questions ask about examples of physical changes, classifying mixtures, why mixtures vary, and separation processes.Basics of Matter.ppt
Basics of Matter.pptGraceAceveda
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This document discusses physical and chemical changes, pure substances, mixtures, and states of matter. It defines physical changes as changes in a substance's state or form without changing its chemical composition, and chemical changes as the formation of new substances through chemical reactions. Mixtures are combinations of substances that are not chemically bonded and can be separated by physical means. The four common states of matter are solids, liquids, gases, and plasma, which differ in the arrangement and movement of their particles according to the kinetic molecular theory.Mixtures, solutions, elements, compounds
Mixtures, solutions, elements, compoundsjdrin001
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This document defines and provides examples of mixtures, solutions, suspensions, and colloids. It explains that mixtures can be physically separated into their original substances, while solutions appear homogeneous but are mixtures of a solute dissolved in a solvent on a molecular level. Suspensions and colloids are heterogeneous mixtures where particles settle out or scatter light differently. The document also defines elements as pure substances that cannot be broken down further, and compounds as pure substances formed by a chemical combination of elements in fixed ratios that have properties distinct from the original elements.Matter
Matteratreasuredsecret
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Chemistry is the study of matter and its properties. Matter can exist as elements, compounds or mixtures. Elements are pure substances that cannot be broken down further. Compounds are formed by chemical bonds between different elements. Mixtures maintain their individual chemical properties and can be separated physically. The kinetic molecular theory describes matter at the molecular level in terms of motion and energy. A physical change alters a substance's physical properties without changing its chemical makeup, while a chemical change produces new substances.matteranditsproperties week 1 and 2.pdf
matteranditsproperties week 1 and 2.pdfMahinayRowena
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This document defines and describes the basic properties and types of matter. It discusses the building blocks of matter including atoms, elements, and compounds. It also defines extensive and intensive properties, and the three common states of matter - solid, liquid, and gas. Additionally, it distinguishes between physical and chemical properties, and physical and chemical changes. It describes mixtures and pure substances, and provides examples of classifying different types of matter.Matter and its properties
Matter and its propertiesChris Mack
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This document discusses the fundamental properties and classification of matter. It defines matter as anything that has mass and takes up space, and it is made of atoms which combine to form elements or compounds. The properties of matter can be extensive, depending on amount, or intensive, not depending on amount. Matter exists in solid, liquid, gas and plasma states and undergoes physical changes that do not alter its chemical identity or chemical changes that create new substances. Mixtures are combinations of substances that retain their own properties, while pure substances have consistent composition and properties regardless of sample.Mixtures, solutions, elements, compounds
Mixtures, solutions, elements, compoundsAllyse Fritz
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This document defines and provides examples of mixtures, solutions, suspensions, colloids, and gas mixtures. It explains that mixtures can be separated physically but their compositions are not fixed, while solutions appear homogeneous but are mixtures that dissolve. Suspensions and colloids are mixtures where particles settle or scatter light differently. The document also defines elements as pure substances that cannot be broken down, and compounds as pure substances formed by chemical combination of elements in specific ratios producing new properties.Mixtures, solutions, elements, compounds
Mixtures, solutions, elements, compoundstracyconover
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This document defines and provides examples of mixtures, solutions, suspensions, colloids, and gas mixtures. It explains that mixtures can be physically separated into their original substances, while solutions appear homogeneous. Suspensions can settle out but colloids cannot. It also defines elements as pure substances that cannot be broken down further, and compounds as pure substances formed by a chemical combination of elements in fixed ratios that have unique properties.Powerpoint for sceince
Powerpoint for sceinceemmacgraland
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This document discusses various chemistry concepts including:
1. Distillation and evaporation, which are processes that separate substances based on their boiling points.
2. Evidence of chemical reactions such as changes in color, formation of gases or precipitates, and changes in temperature.
3. The classifications of matter as pure substances or mixtures, and the different types of mixtures and their properties.Ch 2 materials
Ch 2 materialskeelanwgraland
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The document defines key chemistry concepts such as elements, compounds, mixtures, solutions, suspensions, colloids, and separation techniques including distillation, evaporation, and filtration. It also discusses chemical changes and provides examples such as changes in color, temperature, production of gas, or formation of precipitate. Physical and chemical changes are compared. Reactivity and flammability are also addressed. Review questions are included to test understanding.Matter and materials
Matter and materialsMxolisi Creswell MNCUBE
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1. The document discusses various properties of matter and how they are used to classify and identify different types of matter. It describes extensive properties that depend on amount and intensive properties that depend on type.
2. Mixtures and pure substances are introduced. Heterogeneous mixtures are non-uniform while homogeneous mixtures are uniform throughout. Elements have a unique set of properties while compounds contain two or more elements.
3. The three states of matter are defined as solid, liquid, and gas. Physical and chemical changes are distinguished based on whether the composition changes. Chemical symbols and formulas are used to represent elements and compounds in chemical reactions.Sarah's Science Review Powerpoint
- 1. Density Density= mass (g)/volume (mL) You can compare unknown solids by 鍖nding their densities and seeing if they are the same Density can be measured by using a triple beam balance to 鍖nd the mass, then if it is a geometric shape you could use a ruler, or a graduated cylinder It is a physical characteristic
- 2. Suspension A suspension is a type of mixture It can be distinguished as a suspension because it has layers
- 3. Mixture Matter can either be a compound or a mixture A mixture is a physical combination It can only be broken down physically It can be in any ratio (no 鍖xed or uniform ratio) No one unique set of properties
- 4. Compounds When matter is not classi鍖ed as a mixture it is a compound A compound is a chemical combination Can only be broken down chemically Always in a 鍖xed ratio All compounds have a unique set of properties
- 5. Boiling and Melting Point The temperature at which a substance boils or melts It is a physical property
- 6. Physical Properties Density, Hardness, Boiling Point, Melting Points, Malleability,Viscosity, Conductivity These are physical changes to a matter
- 7. Distillation A process that separates the substances in a solution based on boiling points
- 8. Filtration A process that separates materials based on the size of the particles and/or solubility
- 9. Evaporation A process used to isolate a solid dissolved in liquid Property: Solubility Disclaimer:You are not going to isolate a pure sample of all components of a mixture
- 10. Chemical Properties This is a property produces a change in the composition of the matter Chemical properties can only be observed when the substances in a sample of matter are changing into different substances Three common types of evidence of a chemical property are a change in color, production of gas, and formation of a precipitate Two examples of chemical changes are 鍖ammability, and reactivity The main difference between a physical change and a chemical change is that a chemical change will change the composition of the matter and a physical change will not
- 11. Flammability Flammability is a materials ability to burn in the presence of oxygen
- 12. Reactivity Reactivity is the property that describes how readily a substance combines chemically with other substances This nail has reacted with oxygen and water
- 13. Precipitate A precipitate is any solid that forms and separates from a liquid mixture Ex: If lemon juice or vinegar is added to milk
- 14. QUESTIONS De鍖ne a homogenous mixture
- 15. QUESTIONS NAME THE PHYSICAL PROPERTIES
- 16. QUESTIONS DEFINE A COMPOUND
- 17. IS POTASSIUM NITRATE (KNO3) A COMPOUND OR PURE SUBSTANCE?