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Eighth grade
F.5 Compare physical and chemical changes B6V
What do these two changes have in common?
compost rotting
firing a clay pot in a hot kiln
Select all that apply.
Both are only physical changes.
✓
Both are chemical changes.
Both are caused by heating.
Both are caused by cooling.
Submit
Firing a clay pot in a hot kiln

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost

The equilibrium constant kc for the reaction 2 nocl(g) → 2 no(g) + cl2(g) is 0.453 at a certain temperature. a mixture of nocl, no, and cl2 with concentrations 1.30, 1.20, and 0.600 m, respectively, was introduced into a container at this temperature. which of the following is true? 1. no apparent reaction takes place. 2. [cl2] = 0.30 m at equilibrium. 3. nocl(g) is produced until equilibrium is reached. 4. [nocl] = [no] = [cl2] at equilibrium. 5. cl2(g) is produced until equilibrium is

Sarah is asked to sort out the list of ions and ionic compounds. how can sarah differentiate between the ions and ionic compounds?