When a substance melts, the solid gains heat, and the motion of the particles increases (particles move faster in liquid form than in solid form).
Answer:
Is when there is an increase in the temperature of the liquid
Explanation:
Increase in temperature of the liquid is an indication that chemical change occur because chemical change occur through process of chemical reaction and it involve when two or more substances combine together to form new substances which is as a result of change in chemical composition. The crystals dissolved in water to form another new solution and it became warm and this indicate a chemical change, new substances are formed as a result of increase in temperature.
Answer: NH3 and H2O
Explanation:
NH4OH(l) --> NH3(g) + H2O(g)
Ammonia liquor, NH4OH is an highly unstable hydroxide of ammonium, hence it decomposes on heating to produce ammonia gas, NH3 which is liberated to the surroundings and water, H2O evaporated as steam. In a reverse reaction, ammoniacal liquor is formed by dissolving gaseous ammonia in cold water.
Thus, the products of NH4OH break down are NH3 and H2O
<h3>Answer:</h3><h2>Similarities</h2>
- Fresh water and marine water both are essential parts of the water cycle.
- They contain the same chemical and the amount of minerals in both the ecosystems is same.
- Both addresses to the aquatic development.
<h2>Dissimilarities</h2>
- Marine water carries much higher amounts of suspended chemicals as related to fresh water.
- This larger collection of the chemical also increases the quantity of salt in marine water than that of fresh water.
- Plant and animals existing in these water bodies also differ.