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Tenth Grade (Grade 10) Bonds and Mixing Questions

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Grade 10 Bonds and Mixing
Which element will attract electrons in a chemical bond?
  1. calcium
  2. magnesium
  3. silver
  4. bromine
Grade 10 Bonds and Mixing
To separate insoluble solids from liquids, you would use
  1. distillation.
  2. filtration.
  3. chromatography.
  4. centrifugation.
Grade 10 Bonds and Mixing
Is the following mixture heterogeneous or homogeneous: ink?
  1. homogeneous
  2. heterogeneous
Grade 10 Bonds and Mixing
To separate molecular compounds of different weights what would you use?
  1. chromatography
  2. filtration
  3. distillation
  4. centrifugation
Grade 10 Bonds and Mixing
Which of the following are true about compounds and mixtures?
  1. A compound is made by physically combining its elements.
  2. A compound has a fixed composition; a mixture has a variable composition.
  3. A mixture is made by chemically combining its elements.
  4. A compound has a variable composition; a mixture has a fixed composition.
Grade 10 Bonds and Mixing
How can an aqueous solution of potassium chloride be classified?
  1. a homogeneous substance
  2. a heterogeneous mixture
  3. a compound
  4. a homogeneous mixture
Grade 10 Bonds and Mixing
Which of the following solutions is NOT heterogeneous?
  1. ranch dressing
  2. vegetable soup
  3. orange juice with pulp
  4. vinegar
Grade 10 Bonds and Mixing
Is the following mixture heterogeneous or homogeneous: window glass?
  1. homogeneous
  2. heterogeneous
Grade 10 Bonds and Mixing
Water molecules involve covalent bonds.
  1. True
  2. False
Grade 10 Bonds and Mixing
Which of the following types of bonds present in hydrogen bonding is most polar?
  1. H-O
  2. H-F
  3. H-N
  4. Both (a) and (b) are the most polar
Grade 10 Bonds and Mixing
A double bond involves two pairs of electrons.
  1. True
  2. False
Grade 10 Bonds and Mixing
Based on the solubility curve shown, how does the solubility of KI (s) change as the temperature decreases?
Solubility Chart
  1. The solubility decreases.
  2. The solubility increases.
  3. The solubility remains the same.
  4. The solubility increases and decreases.
Grade 10 Bonds and Mixing
When chlorine forms an ion, what charge does it have?
  1. -1
  2. -2
  3. +1
  4. +2
Grade 10 Bonds and Mixing
Is the following mixture heterogeneous or homogeneous: white wine?
  1. homogeneous
  2. heterogeneous
Grade 10 Bonds and Mixing
Which must be a mixture of substances?
  1. liquid
  2. solution
  3. solid
  4. gas
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