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Is melting crayons a physical property?
Melting crayons is a physical change, not a physical property. A physical property is a characteristic of a substance that can be observed without changing the substance's identity, while a physical change is a change in the substance's appearance without changing its chemical composition.
What happens to the temperatures of a substance while it is changing state?
It can lose or gain energy or it forms the attractions between particles.
Is burning a candle wick a physical property?
No, burning a candle wick is a chemical change, not a physical property. Physical properties describe characteristics that can be observed without changing the substance's identity, while chemical changes involve the rearrangement of atoms and result in a new substance being formed.
Is changing the size and shape of pieces of wood a chemical change true or false?
False. Changing the size and shape of pieces of wood is a physical change, not a chemical change. A chemical change involves the alteration of the chemical composition of a substance, while a physical change only affects the physical properties of a substance.
How would you compare physical and chemical properties and physical and chemical changes?
Physical properties are characteristics that can be observed or measured without changing the substance's identity, such as color or density. Chemical properties describe how a substance interacts with other substances, like its ability to rust or burn. Physical changes alter a substance's appearance or state without changing its chemical composition, while chemical changes result in the formation of new substances with different chemical properties.
What is the differences between chemical and physical change?
A chemical change involves a change in a substance's chemical properties (characteristics that describe how it interacts with other substances).A physical change involves a change in a substance's physical properties(characteristics that describe certain features one can see with their 5 senses).
Which characteristics of motion could change without changing the velocity of an object?
Some characteristics of motion that could change without changing the velocity of an object include acceleration, direction, and position. For example, an object moving in a circle at a constant speed has a changing acceleration (centripetal acceleration), changing direction, but constant velocity. Similarly, an object can change its position while maintaining a constant velocity if it moves along a straight path.
What is difference between liquifaction and condensation?
Liquefaction is the process of changing a substance from a solid state to a liquid state, while condensation is the process of changing a substance from a gas state to a liquid state. Liquefaction usually occurs with solids, while condensation usually occurs with gases.
Is a boiling point an example of chemical properties?
No, boiling point is a physical property, not a chemical property. Chemical properties describe how a substance reacts with other substances, while physical properties describe characteristics that can be observed or measured without changing the substance's chemical composition.
What are two physical properties that can vary even when the substance with these properties does not change?
Density and temperature can both vary for a substance without changing the identity of the substance. The density of a substance can change with temperature, pressure, or the presence of impurities, while the temperature of a substance can change due to external factors like heating or cooling.
Melting is not the same as evaporation because?
melting is the process of a substance changing from a solid to a liquid state due to an increase in temperature, while evaporation is the process of a substance changing from a liquid to a gas state due to heat energy. Melting involves a phase change from solid to liquid, while evaporation involves a phase change from liquid to gas.
Is shortening melting a chemical property?
No, shortening melting is a physical property. Chemical properties involve changes in the chemical makeup of a substance, while physical properties describe characteristics that can be observed without changing the substance's chemical composition.
