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Search Results for substances - All Grades

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Grade 9 Acids and Bases
When an unknown substance is dissolved in water, hydronium ions form. What can you conclude about the substance?
  1. The substance is a gas.
  2. The substance is a base.
  3. The substance is a carbohydrate.
  4. The substance is an acid.
Grade 10 Solvents, Solutes, and Solubility
What is a solute?
  1. the substance that dissolves another substance
  2. the solution of 2 or more substances
  3. the substance that is being dissolved
Grade 10 Chemistry
A student is trying to determine the identity of a substance, so he writes down a list of observations. Which of the following observations is a chemical property?
  1. The substance conducts an electric current
  2. The substance oxidizes in air
  3. The substance is attracted to a magnet
  4. The substance dissolves in water
Grade 11 Chemistry
When two or more atoms are chemically combined, which of the following is produced?
  1. A mixture
  2. A substance
  3. A molecule
  4. A miscible substance
Grade 8 Bonds and Mixing
A mixture is:
  1. 1 substance
  2. 2 or more substances
Grade 8 Molecules and Compounds
Salt (sodium chloride) is an                    .
  1. organic substance
  2. acid
  3. inorganic substance
  4. element
None Cell Structure and Function
Diffusion is what?
  1. movement of paritcles of a substance
  2. movement of gradient of a substance
  3. movment of optimum temp of a substance
Grade 8 Properties of Matter
Which of the following describes signs that a chemical change is occurring?
  1. A substance changes shape or state.
  2. A substance gives off or absorbs heat.
  3. A substance is dense or malleable.
  4. A substance is flammable and reactive.
Grade 6 Periodic Table and Elements
Another word for element is
  1. Compound
  2. Pure Substance
  3. Mixed Substance
  4. Solid
Grade 10 Acids and Bases
What is an acid?
  1. substance that produces hydrogen ions
  2. substance that produces hydroxide ions
  3. substance that produces salt and water
Grade 6 Properties of Matter
What is a chemical change?
  1. A substance changes due to its chemical properties, but the substance stays the same
  2. A substance changes due to its chemical properties and forms a new substance
  3. A substance changes due to its physical properties
Grade 8 Periodic Table and Elements
A substance that contains only one type of particle a(n)?
  1. Micro
  2. Pure Substance
  3. Plain Substance
  4. None of the above
Graduate Nervous and Endocrine Systems
Grade 8 Bonds and Mixing
What is the definition of a solvent?
  1. The substance that is dissolved.
  2. The substance in which the solute is dissolved.
  3. Unable to be dissolved.
Grade 7 Properties of Matter
Grade 6 Properties of Matter
A change in the chemical properties of a substance results in a
  1. The same substance
  2. A change of state
  3. New substance
  4. Fire
Grade 6 Properties of Matter
What is a physical change?
  1. The physical properties of a substance changes, but the identity of the substance does not change
  2. The physical properties of a substance changes and the identity of the substance changes
  3. The physical properties remain the same
  4. The physical and chemical properties of a substance changes
Grade 5 Properties of Matter
A liquid is
  1. a substance that does not have a definite shape or volume
  2. a substance with a definite volume, but no definite shape
  3. a substance with a definite shape and volume
  4. a substance whose particles vibrate
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