Matter and Energy
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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show | Elements and Compounds
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show | Element
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Every element is composed of: | show 🗑
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A type of pure substance that consists of two or more elements always chemically combined in the same proportion: | show 🗑
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show | physically; chemically
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Unlike compounds, the proportions of substances in a mixture are... | show 🗑
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show | No
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show | Yes
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Why can physical processes be used to separate mixtures? | show 🗑
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Type of mixture which is also called a "solution", has a uniform composition throughout, and it's individual components are not visible: | show 🗑
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Type of mixture which does not have a uniform composition, individual components are visible and appear as two separate regions | show 🗑
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Examples of homogenous mixtures: | show 🗑
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show | Orange juice with pulp, oatmeal raisin cookie, oil and water
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show | Filtration
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Physical forms are called: | show 🗑
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3 states of matter: | show 🗑
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show | Solid
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show | Liquid
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show | Gas
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show | Physical properties
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show | Physical change
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show | Chemical
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When a ______ change takes place, the original substance is converted into one or more new substances, which have new physical and chemical properties: | show 🗑
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Physical or Chemical change? Water boils to form water vapor: | show 🗑
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show | Physical
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show | Chemical
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show | Physical
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Physical or chemical change? A piece of wood burns with a bright flame and produces heat, ashes, carbon dioxide, and water vapor: | show 🗑
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show | Physical
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Physical or Chemical change? Iron, which is gray and shiny, combines with oxygen to form orange-red rust: | show 🗑
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show | Celsius
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show | 0 degrees C
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show | 100 degrees C
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Human body temp in C | show 🗑
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Human body temp in F | show 🗑
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show | 100 C
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show | 180 F
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show | 1.8 degrees F
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180 degrees F is equal to ____ degree(s) C: | show 🗑
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Equation to obtain Fahrenheit from Celsius: | show 🗑
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show | Change Celsius to Fahrenheit
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show | Adjust the freezing point from Celsius to Fahrenheit
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show | No, they are exact
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Equation to obtain degrees C: | show 🗑
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354 Fahrenheit in C: | show 🗑
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24 degrees Celsius in F: | show 🗑
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show | -273 C (More precisely 273.15 C)
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show | 0 K "Absolute zero"
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Degrees in Kelvin are called: | show 🗑
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This temperature scale has no negative temperature values: | show 🗑
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show | 273 K
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show | 373 K
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difference between boiling and freezing point in Kelvins | show 🗑
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1 kelvin is equal to 1 degree _____ | show 🗑
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show | TK=TC+273
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How to obtain Kelvins from F | show 🗑
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show | The ability to do work
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show | Kinetic and Potential
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show | Kinetic
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show | Kinetic
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show | The position of an object or the chemical composition of a substance.
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show | Boulder on mountain
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show | The boulder could roll down the mountain
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What is the type of energy associated with the motion of particles? | show 🗑
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True or false: The particles in an ice cube move very slowly, if you hold the ice cube in your hand, the particles move faster meaning the ice cube now has greater heat or thermal energy: | show 🗑
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The SI unit for energy and work: | show 🗑
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The joule is a small amount of energy, so scientists will often use the ______: | show 🗑
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show | exactly 4.184 j
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show | 4.184 j/ 1 cal and 1 cal/4.184 j
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1 kilocalorie Kcal is equal to: | show 🗑
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show | 1000 joules
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show | j x 1 cal/4.184 j
360 j x 1 cal/4.184 j = 86 cal
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The nutritional unit Calorie (Cal with a capital C) is equivalent to: | show 🗑
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show | The Kilocalories or Kilojoules obtained from burning 1 g of carbohydrate, fat, or protein.
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Equation to obtain Kilocalories when given the amount of a nutrient in grams: | show 🗑
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Equation to obtain kilojoules when given the amount of a nutrient in grams: | show 🗑
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How many kcal/g are there in carbohydrates? | show 🗑
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How many kJ/g are there in carbohydrates? | show 🗑
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How many kcal/g are there in fat? | show 🗑
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show | 38 kJ/g
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How many kcal/g are there in protein? | show 🗑
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How many kJ/g are there in protein? | show 🗑
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Equation to obtain percentage of fat in one serving of snack crackers: | show 🗑
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show | The specific heat (SH) of a substance is defined as the amount of heat needed to raise the temperature of exactly 1 g of a substance by exactly 1 degree Celsius
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show | ΔT
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show | "Change in"
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Specific heat equation: | show 🗑
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show | True
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Heat equation using calories: | show 🗑
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Heat equation for joules: | show 🗑
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Specific heat of water: | show 🗑
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show | Faster
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At a temperature called:_____________, The particles of a solid gain sufficient energy to overcome the attractive forces that hold them together: | show 🗑
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show | Melting
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show | Freezing point
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show | True
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During melting, the _______ is the energy that must be added to convert exactly 1 g of solid to liquid at the melting point: | show 🗑
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show | 80. cal (334 j)
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show | heat = mass x heat of fusion
cal= g x 80. cal/g
J= g x 334 J/g
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In a process called ______ the particles on the surface of a solid change directly to a gas, without going through the liquid state: | show 🗑
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________ Is taking place as particles with sufficient energy escape from the liquid surface and enter the gas phase: | show 🗑
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reverse of evaporation, water vapor is converted back to liquid as the water particles lose kinetic energy and slow down: | show 🗑
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Condensation occurs at the same temperature as: | show 🗑
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show | Heat of vaporization
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show | 540 cal
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show | 2260 J
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show | 540 cal/1 g H2O
and 2260 J /1 g H2O ( and vice versa)
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Write equation for calculating heat to condense (or boil) water: | show 🗑
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______ Equation would be used to calculate how much energy/heat needs to be added or removed to melt or heat water: | show 🗑
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________ equation would be used to determine how much heat is added or released when liquid turns to vapor or vapor to liquid: | show 🗑
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Created by:
Lilielena
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