6.6E Evidence of Chemical Change Quiz

Which of the following is an example of a chemical change?

• Melting ice

• Burning wood

• Tearing paper

• Dissolving sugar in water

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TEKS.SCI.6.6E

DOK Level 1: Recall

When vinegar is added to baking soda, bubbles form. This indicates (a)  

• A physical change
• A chemical change
• A change in state
• No change

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TEKS.SCI.6.6E

DOK Level 1: Recall

Which of the following is evidence of a chemical change?

• Change in shape

• Change in size

• Production of a gas

• Melting

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TEKS.SCI.6.6E

DOK Level 1: Recall

Match the following terms with their correct definitions:

• The substance in which the solute dissolves

• Suspension

• A mixture in which particles are dispersed throughout the bulk of a fluid

• Solute

• The substance that is dissolved in a solution

• Precipitate

• A solid that forms and settles out of a liquid mixture

• Solvent

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TEKS.SCI.6.6E

DOK Level 1: Recall

Which of the following observations would best indicate a chemical change has occurred?

• The substance changes shape

• The substance changes color

• The substance is cut into pieces

• The substance is mixed with water

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TEKS.SCI.6.6E

DOK Level 2: Skill/Concept

A student observes that a reaction between two substances releases heat. What type of evidence is this for a chemical change?

• Production of a gas

• Change in thermal energy

• Formation of a precipitate

• Color change

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TEKS.SCI.6.6E

DOK Level 2: Skill/Concept

Which of the following scenarios involves the formation of a new substance?

• Ice melting into water

• Salt dissolving in water

• Iron rusting

• Water boiling

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TEKS.SCI.6.6E

DOK Level 2: Skill/Concept

A student mixes two chemicals and notices the temperature of the mixture increases. What should the student conclude?

• A physical change has occurred

• A chemical change has occurred

• No change has occurred

• The chemicals are dissolving

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TEKS.SCI.6.6E

DOK Level 3: Strategic Thinking

During an experiment, a student observes a color change when two substances are mixed. What type of evidence does this provide?

• Evidence of a physical change

• Evidence of a chemical change

• Evidence of a state change

• Evidence of a mixture

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TEKS.SCI.6.6E

DOK Level 3: Strategic Thinking

A student is given a task to identify whether a chemical change has occurred. Which of the following observations would provide the strongest evidence?

• The substance changes shape

• The substance changes color

• The substance is heated

• The substance is mixed with water

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TEKS.SCI.6.6E

DOK Level 3: Strategic Thinking