Podcast
Questions and Answers
What type of change occurs when coal is burned?
What type of change occurs when coal is burned?
- Chemical Change (correct)
- No Change
- State Change
- Physical Change
Frying an egg represents a physical change.
Frying an egg represents a physical change.
False (B)
What happens to the temperature of the surroundings during an explosion when energy is transferred?
What happens to the temperature of the surroundings during an explosion when energy is transferred?
The temperature increases.
In a chemical reaction, bonds between atoms in the reactants are ______.
In a chemical reaction, bonds between atoms in the reactants are ______.
Match the following gas pressure concepts with their descriptions:
Match the following gas pressure concepts with their descriptions:
What type of change occurs when solid wax is heated until it becomes liquid?
What type of change occurs when solid wax is heated until it becomes liquid?
The rearranging of molecules is a characteristic of physical changes.
The rearranging of molecules is a characteristic of physical changes.
What physical change occurred before the explosion illustrated in photo C?
What physical change occurred before the explosion illustrated in photo C?
Flashcards
Physical Change
Physical Change
A change in the appearance or state of matter without forming a new substance.
Chemical Change
Chemical Change
A change in which a new substance is formed.
Chemical Reaction
Chemical Reaction
Atoms rearrange, creating new substances with different properties.
Particle model (gas)
Particle model (gas)
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Increase gas pressure
Increase gas pressure
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Symbol Equation
Symbol Equation
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Reactants
Reactants
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Products
Products
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