Matter Basics

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by Dr. Osama M. Khaled last modified 2022-07-29T06:17:12+00:00

Test your knowledge about some fundamental concepts in matter

Questions #: 24
Time: 10 minutes
Pass Score: 80.0%
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Mode

Which of the following is matter and not matter?

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A matter can be described by shape, size, colour, and temperature.

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Copper reacting with nitric acid is an example of matter chemical change

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A chemical change will never be accompanied by physical changes

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What is the type of change if water in the air turns into snow?

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Soda water (Carbon dioxide is dissolved in water.)

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A mixture of iron metal filings and sulfur powder (Both iron and sulfur are elements.)

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An amalgam, a combination of some other metals dissolved in a small amount of mercury

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Identify each as either matter or not matter

  1. a book
  2. hate
  3. light
  4. a car
  5. a fried eg
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matter
not matter
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Identify the stages after putting some ice outside the fridge

 

Ice Water Vapor
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Gas
Liquid
Solid
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Does each statement represent a physical property or a chemical property?

  1. Sulfur is yellow.
  2. Steel wool burns when ignited by a flame.
  3. A gallon of milk weighs over eight pounds.
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physical property
chemical property
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Does each statement represent a physical change or a chemical change?

  1. Water boils and becomes steam.
  2. Food is converted into usable form by the digestive system.
  3. The alcohol in many thermometers freezes at about −40 degrees Fahrenheit.
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physical change
chemical change
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Does each statement represent a physical change or a chemical change?

  1. Graphite, a form of elemental carbon, can be turned into diamond, another form of carbon, at very high temperatures and pressures.
  2. The house across the street has been painted a new color.
  3. The elements sodium and chlorine come together to make a new substance called sodium chloride.
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physical change
chemical change
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Distinguish between an element and a compound. About how many of each are known?

An is a fundamental chemical part of a . A is a combination of elements that acts as a different

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element
substance
compound
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Identify each as a heterogeneous mixture or a homogeneous mixture

  1. Salt is mixed with pepper
  2. Sugar is dissolved in water
  3. Pasta is cooked in boiling water
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heterogeneous
homogeneous
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Identify each as a heterogeneous mixture or a homogeneous mixture

  1. air
  2. dirt
  3. a television set
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heterogeneous
homogeneous
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Which choices are solutions

  1. Salt is mixed with pepper
  2. Sugar is dissolved in water
  3. Pasta is cooked in boiling water
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solution
not solution
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Which choice is a solution?

  1. air
  2. dirt
  3. a radio
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solution
not solution
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Iron is a metal because it is solid, is shiny, and conducts electricity and heat well

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Oxygen is nonmetal because it is gas and not a good conductor of heat and electricity

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Metals vs nonmetals

are typically shiny, conduct electricity and heat well, and are malleable and ductile.  are a variety of colors and phases, are brittle in the solid phase, and do not conduct heat or electricity well

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Metals
Nonmetals
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Elemental carbon

Elemental carbon is a black, dull-looking solid that conducts heat and electricity well. It is very brittle and cannot be made into thin sheets or long wires. Of these properties, how does carbon behave as a metal? How does carbon behave as a nonmetal?

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Pure silicon

Pure silicon is shiny and silvery but does not conduct electricity or heat well.  Of these properties, how does silicon behave as a metal? How does silicon behave as a nonmetal?

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Does each statement represent a physical property or a chemical property?

  1. A pile of leaves slowly rots in the backyard.
  2. In the presence of oxygen, hydrogen can interact to make water.
  3. Gold can be stretched into very thin wires.
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physical property
chemical property
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