Chemistry, 15.12.2020 23:50 minecraft37385
A student used a portable electric drill to remove screws from a broken wooden table. He noticed that the screws holding the table together were warm to the touch after being removed from the wood. Which statement best explains this phenomenon?
A:Electrical energy from the drill was converted into chemical energy due to conductivity.
B:The process of removing the screw concentrated the thermal energy that was already present in the wood
Answers: 2
Chemistry, 22.06.2019 03:00
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
Answers: 3
Chemistry, 22.06.2019 13:00
The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false
Answers: 2
Chemistry, 22.06.2019 14:00
How is the atomic number of a nucleus changed by alpha decay
Answers: 2
Chemistry, 22.06.2019 14:50
How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.
Answers: 1
A student used a portable electric drill to remove screws from a broken wooden table. He noticed tha...
Mathematics, 13.09.2019 06:30
English, 13.09.2019 06:30
Biology, 13.09.2019 06:30
Mathematics, 13.09.2019 06:30
Mathematics, 13.09.2019 06:30
Social Studies, 13.09.2019 06:30
History, 13.09.2019 06:30
Chemistry, 13.09.2019 06:30