Podcast
Questions and Answers
Which of the following is an example of a physical change?
Which of the following is an example of a physical change?
- Rusting of iron
- Burning wood to produce ash
- Digesting food in the stomach
- Mixing salt and water to form a solution (correct)
What is NOT a characteristic of physical changes?
What is NOT a characteristic of physical changes?
- Reversible using physical means
- Can separate mixtures into their component compounds
- Changes the chemical composition (correct)
- Involves a change in physical properties
What property is NOT considered a physical property?
What property is NOT considered a physical property?
- Density
- Color
- Melting
- Burning (correct)
Which process involves a physical change?
Which process involves a physical change?
What is an example of a physical change involving rearrangement of atoms?
What is an example of a physical change involving rearrangement of atoms?
Which process can result in the formation of different crystal types in metals?
Which process can result in the formation of different crystal types in metals?
How are mixtures of substances that are not soluble usually separated?
How are mixtures of substances that are not soluble usually separated?
What is the process of separating individual metals from an alloy that may require chemical processing?
What is the process of separating individual metals from an alloy that may require chemical processing?
Which type of change cannot readily be undone by physical means?
Which type of change cannot readily be undone by physical means?
What process can be used to separate most solutions of salts and some compounds such as sugars?
What process can be used to separate most solutions of salts and some compounds such as sugars?
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