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19. Which is nota possible clue that a chemical change has occurred The substance melts. The color changes. A precipitate forms. Bubbles are produced.?
The statement "The substance melts" is not a possible clue that a chemical change has occurred. Melting is a physical change, as it involves a change in the state of matter from solid to liquid without altering the substance's chemical composition. In contrast, color changes, precipitate formation, and bubble production typically indicate chemical changes.
Is silver melts when using a blow torch a chemical or physical recation?
It is a physical reaction. Melting is a physical change because it does not change the chemical composition of the substance.
when ice melts is it a chemical of physical change?
When ice melts, it is a physical change, because it involves change only in the physical state of water. No new chemical substance is formed in the process and the change is reversible. Chemical change is a process in which one or more substances are altered into one or more new and different substances. Examples of chemical changes are: Burning wood Baking a cake Mixing vinegar and baking soda
When a cube of ice melts to form a puddle of water is it a physical or chemical change?
The melting of ice to form water is a physical change. It involves a change in state from solid to liquid, but the chemical composition of the substance remains the same.
Ice melting is a physical or chemical?
physical because a chemical change means it can never form back
19. Which is nota possible clue that a chemical change has occurred The substance melts. The color changes. A precipitate forms. Bubbles are produced.?
The statement "The substance melts" is not a possible clue that a chemical change has occurred. Melting is a physical change, as it involves a change in the state of matter from solid to liquid without altering the substance's chemical composition. In contrast, color changes, precipitate formation, and bubble production typically indicate chemical changes.
What happens to the atom or molecules of a substance if it melts?
Nothing. Melting is a physical change and does not alter the chemical composition of a substance.
Is silver melts when using a blow torch a chemical or physical recation?
It is a physical reaction. Melting is a physical change because it does not change the chemical composition of the substance.
Is a change that produces a new substance is a chemical change?
False. This is a chemical change. A physical change is, for example, when Ice melts into water. It is the same element but it is in a different form. A chemical change is, for example, when two hydrogen atoms and an oxygen atom come together to form a water molecule, thereby producing a new substance.
What is a physical change rather than a chemical change?
`A physical change is one in which matter is changed into another physical state without changing its chemical constitution(eg-ice melts to water,in both case substance is H2O).A chemical change is where there is a chemical change of the substance during the process(eg-CaCO3 is heated to form CO2 and CaO,here the new substance formed is unrelated chemically to parent substance.)
Is melt a chemical or physical?
Melting is a physical change because it does not involve a change in the chemical composition of the substance. When a substance melts, its molecules or atoms move apart, resulting in a change in its physical state from solid to liquid.
Is melts at 145 degree Celsius physical or chemical?
The melting of a substance, such as at 145 degrees Celsius, is a physical change. It involves a change in state from solid to liquid due to the absorption of heat energy, without altering the chemical composition of the substance.
Is Iron melts at 1535 degrees a chemical change?
No, the melting of iron at 1535 degrees Celsius is a physical change. A chemical change would involve a rearrangement of the atoms in the iron, leading to the formation of a different substance.
When the wick burns and the candle melts is it a chemical or physical change?
it is a chemical change
when ice melts is it a chemical of physical change?
When ice melts, it is a physical change, because it involves change only in the physical state of water. No new chemical substance is formed in the process and the change is reversible. Chemical change is a process in which one or more substances are altered into one or more new and different substances. Examples of chemical changes are: Burning wood Baking a cake Mixing vinegar and baking soda
When a cube of ice melts to form a puddle of water is it a physical or chemical change?
The melting of ice to form water is a physical change. It involves a change in state from solid to liquid, but the chemical composition of the substance remains the same.
When a substance undergoes a phase change what occurs a particle change a chemical change a new substance is formed a physical change?
During a phase change, the substance transitions between different states of matter (solid, liquid, gas) without any change in the chemical composition of the particles involved. This means that there is no new substance formed and no chemical change taking place, it is solely a physical change.
