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Bonding and Mixtures (Grade 9)

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Bonding and Mixtures

What is an ionic compound that forms when a metal atom or a positive radical replaces the hydrogen of an acid called?
  1. soap
  2. salt
  3. disinfectant
  4. all of the above
What type of compound is formed when two ions form an ionic bond?
  1. crystal
  2. interparticle force
  3. ionic compound
  4. covalent bond
A material that has the same composition throughout can be classified as which of the following?
  1. homogeneous
  2. heterogeneous
What is a combination of sand and salt that can be separated rather easily called?
  1. a substance
  2. a mass
  3. a mixture
  4. a property
How many types of bonding are there?
  1. 15
  2. 3
  3. 6
  4. 4
Chemical bonds are likely to form when
  1. two atoms have the same number of electrons.
  2. an atom's outer energy level doesn't have the maximum number of electrons.
  3. an atom's nucleus has the same number of protons as neutrons.
  4. an atom's outer energy level is filled.
You and your friend go out for lunch. You order an iced tea and add 4 packets of sugar in the raw (brown sugar) and stir. Even after stirring for 5 minutes, you can still see the sugar in the raw crystals. This is an example of which of the following?
  1. solution
  2. acid
  3. mixture
  4. suspension
Which of the following is not considered a pure substance?
  1. Carbon
  2. Salt (Sodium Chloride)
  3. Lemonade
  4. Water
  5. Iron
Leandra was dissolving ammonia gas in water. In this example, the ammonia gas is
  1. the solute.
  2. the solvent.
  3. the precipitate.
  4. the solution.
  5. the element.
The solubility of potassium chloride                      as its temperature                     .
  1. increases; increases
  2. decreases; decreases
  3. increases; decreases
  4. decreases; increases
The attraction between atoms in a molecule or crystalline structure is called a                .
  1. solution
  2. magnet
  3. bond
A compound composed of electrically charged atoms is called a(n)                   compound.
  1. octet
  2. chemically stable
  3. ionic
  4. covalent
A(n)                 substance takes up so much water from the air that it forms a liquid solution.
  1. hydrate
  2. deliquescent
  3. hygroscopic
  4. anhydrous
When hydrated copper sulfate is heated, it loses its water of hydration and becomes                copper sulfate.
  1. anhydrous
  2. formula
  3. negative
  4. oxidation
A solution of two or more metals such as brass is
  1. an alloy.
  2. a heterogeneous mixture.
  3. matter.
  4. a mixture.
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