Coal combustion causes a chemical change. Burning coal in a furnace will result in a chemical change. Therefore, option A is correct.
A chemical change is the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances. It occurs when one substance reacts with another to form a new substance.
Coal combustion causes a chemical change. The main component, carbon, is converted to carbon dioxide when coal is burned. This process is irreversible.
When carbon is burned, it produces carbon dioxide, and hydrogen produces water. Each of these reactions generates a different amount of heat. Because this process cannot be reversed, coal combustion is a chemical change.
Thus, option A is correct.
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Answer:
3.6cm^3
Explanation:
v=m/d
v=46.1/12.8
v=3.6cm^3
b.form a tsunami.
c.stay in the same place.
d.mix together in the water cycle.
When different parts of the oceans are heated unevenly, this causes the water to A. move in convection currents
When different parts of the oceans are heated unevenly, it leads to temperature variations within the water. Warm water tends to rise, creating convection currents. This movement is driven by the principle that warm fluids are lighter and, therefore, buoyant, while cooler fluids are denser and tend to sink. This process is analogous to the movement of air in the atmosphere.
So, the uneven heating of ocean waters results in the generation of convection currents, as warm water ascends and cooler water descends. This phenomenon plays a crucial role in redistributing heat and influencing climate patterns across the globe.
Read more about water here: brainly.com/question/1313076
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Answer:
a
Explanation: