Answer:
Melting tin and then cooling it into a mold
Explanation:
When you melt something, and when it cools it returns to its physical state, therefore the physical changes are reversible. For example, take chocolate. When chocolate melts its liquid, then when it's in a colder situation it becomes solid again and so on, the changes are reversible.
Close together but are able to slide past one another
When gas molecules condense, they lose energy. Condensation will lose electrons and will slow down the compaction of electrons to each other which results to reduction of heat energy. As heat energy decreases, it allows those lose electrons to combine with liquid.
Answer:
0.25m/s
Explanation:
m1v1 =m2 v2. law of conservation the of momentum. since they smash together to form a big drop M2 =2m1
m1*0.50m/s=2m1*v2
V2= m1*0.50m/s÷2m1
V2= 0.25m/s
A. NaCl (salt) because it is an ionic compound which will dissociate in water and make the water conduct electricity
Explanation:
Sodium chloride (NaCl) is an ionic compound and when is dissolved in water sodium (Na⁺) and chlorine (Cl⁻) ions are formed. The ions in water will promote the movement of electrical charges so the solution will conduct electricity.
Sugar (C₆H₁₂O₆) is a covalent compound and will not form ions when is dissolved in water. The sugar solution will not conduct electricity.
Learn more about:
conduction of electricity by ions
brainly.com/question/10371579
brainly.com/question/2578961
#learnwithBrainly