1. which of these is a chemical property of a substance?
a. reactivity
b. c...
Physics, 30.09.2019 05:50 samanthaepperson
1. which of these is a chemical property of a substance?
a. reactivity
b. color
c. boiling point
d. melting point
question 2
which of these is true of a chemical reaction?
a. energy is always released.
b. energy is always absorbed.
c. energy is either released or absorbed.
d. energy is not transferred.
question 3
which of these is an example of a chemical change?
a. leaving cheese out to get moldy
b. smelling sprayed perfume
question 3
which of these is an example of a chemical change?
a. leaving cheese out to get moldy
b. smelling sprayed perfume
c. feeling ice melt on your skin
d. crushing ice with a hammer
question 4
which of these is an example of a physical change?
a. melting a substance
b. breaking chemical bonds
c. forming chemical bonds
d. nuclear decay
question 5
which of these is an example of a physical change?
a. gasoline burning
b. metal denting
c. iron rusting
d. silver tarnishing
Answers: 2
Physics, 21.06.2019 18:00
Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.
Answers: 2
Physics, 22.06.2019 02:30
The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static
Answers: 3
Physics, 23.06.2019 02:50
You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?
Answers: 1
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