Which statement describes the appearance of a temperature-vs.-time graph? A horizontal line shows that the temperature increases at a constant rate over time. A vertical line shows that the temperature decreases at a constant rate over time. Horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. Horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

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goodkida7 goodkida7

04-02-2019
Chemistry

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Which statement describes the appearance of a temperature-vs.-time graph? A horizontal line shows that the temperature increases at a constant rate over time. A vertical line shows that the temperature decreases at a constant rate over time. Horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. Horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

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znk znk · Answer 1 · 2019-02-04T16:56:13+01:00

Answer:

Horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases.

Step-by-step explanation:

The temperature is constant during a phase change (melting or boiling), so the graph is a horizontal line.

The temperature increases when a single phase (solid, liquid, or gas) is heated, so the graph for these changes has an upward slope.

A is wrong. A horizontal line shows a constant temperature.

B is wrong. There are no vertical lines in a heating curve.

D is wrong. A horizontal line does correspond to an increase in temperature.

kumaripoojavt kumaripoojavt · Answer 2 · 2022-07-20T14:07:43+02:00

Horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. Hence, option C is correct.

What is a temperature graph?

Temperature is a physical quantity that expresses hot and cold or a measure of the average kinetic energy of the atoms or molecules in the system.

If you are told to make a graph of "temperature vs. time", that means the temperature is on the y-axis and time is on the x-axis.

Step-by-step explanation:

The temperature is constant during a phase change (melting or boiling), so the graph is a horizontal line.

The temperature increases when a single phase (solid, liquid, or gas) is heated, so the graph for these changes has an upward slope.

A is wrong. A horizontal line shows a constant temperature.

B is wrong. There are no vertical lines in a heating curve.

D is wrong. A horizontal line does correspond to an increase in temperature.

Hence, option C is correct.

Learn more about temperature here:

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