Question

Note: An example heating curve is given in Figure 6 in the background information 81 т T o Word(s) 2. Are there parts of the curve with positive slopes and parts that are flat (slope of zero)? What states of matter are present when the slope of the heating curve is positive and what states of matter are present when the slope is zero or close to zero? в u = = т т. O Words) 3. Describe the key characteristics for the three states of matter. T O Words

Answer 1

(2) Yes, in the figure there are some parts with positive slopes and some parts with zero slopes.

The parts with positive slopes have different states like Solid, liquid and gaseous, where as with the zero slopes, the states are in combination such as ( solid and liquid) and (liquid and gaseous) .

(3) From this graph, we can observe easily that, whenever one state change from one state to other, it doesn't transfer quickly nor directly it is slow process and whenever states changes occur, it occurs with the presence of both the states.

For example, when solid state changes to liquid, it changes over the time in which both the states exist. Similarly, when liquid changes to gaseous state, it occurs over time with the presence of both liquid and gaseous state.

Also, from this graph, we will get the temperature at which solid changes to liquid is called melting point and the temperature at which liquid changes to gaseous state is called the boiling temperature.

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