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(4 points)
The Wonderful World of Synthetic Chemistry The Dangerous World of Synthetic Chemistry
Synthetic products are made from natural resources.
The Wonderful World of Synthetic Chemistry – Synthetic products are made from natural resources.
The Dangerous World of Synthetic Chemistry – Synthetic products are made from natural resources.
Synthetic products can be useful and can even save lives.
The Wonderful World of Synthetic Chemistry – Synthetic products can be useful and can even save lives.
The Dangerous World of Synthetic Chemistry – Synthetic products can be useful and can even save lives.
Synthetic products can be toxic for people and the planet.
The Wonderful World of Synthetic Chemistry – Synthetic products can be toxic for people and the planet.
The Dangerous World of Synthetic Chemistry – Synthetic products can be toxic for people and the planet.
People should avoid using synthetic products whenever possible.
23 answers
(1 point)
Responses
The synthetic materials have the same properties as the raw materials because chemical reactions took place.
The synthetic materials have the same properties as the raw materials because chemical reactions took place.
The synthetic materials have different properties from the raw materials because chemical reactions took place.
The synthetic materials have different properties from the raw materials because chemical reactions took place.
The synthetic materials have the same properties as the raw materials because chemical reactions did not take place.
The synthetic materials have the same properties as the raw materials because chemical reactions did not take place.
The synthetic materials have different properties from the raw materials because chemical reactions did not take place.
(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
synthetic materials natural materials
natural materials: water, cotton, oak tree
NH4
Cl + H2
O → NH4
OH + HCl
starting temperature ending temperature
20o
C 14o
C
Fill in the blanks to complete the following description.
(6 points)
In this reaction, the temperature changed from
to
. This means the temperature
. This type of reaction is categorized as
. This type of reaction causes the surrounding to feel
, which is why it is a good reaction to use when designing a
(−2)×(15)÷(23)×(−56)÷(34)
(1 point)
Responses
16
Start Fraction 1 over 6 End Fraction
23
Start Fraction 2 over 3 End Fraction
−16
negative Start Fraction 1 over 6 End Fraction
−23
First, multiply -2 and 15:
(-2) × (15) = -30.
Then, divide -30 by 23:
-30 ÷ 23 ≈ -1.3043 (rounded to four decimal places).
Next, multiply -1.3043 by -56:
-1.3043 × (-56) ≈ 73.0262 (rounded to four decimal places).
Finally, divide 73.0262 by 34:
73.0262 ÷ 34 ≈ 2.1472 (rounded to four decimal places).
Therefore, the solution to the given expression is approximately 2.1472.
(−2)×(15)÷(23)×(−56)÷(34)
(1 point)
Responses
16
Start Fraction 1 over 6 End Fraction
2/3
Start Fraction 2 over 3 End Fraction
−1/6
negative Start Fraction 1 over 6 End Fraction
−2/3
Multiply (-2) and (15):
(-2) × (15) = -30
Divide -30 by 23:
-30 ÷ 23 ≈ -1.3043 (rounded to four decimal places)
Multiply -1.3043 and -56:
-1.3043 × -56 ≈ 73.0262 (rounded to four decimal places)
Divide 73.0262 by 34:
73.0262 ÷ 34 ≈ 2.1472 (rounded to four decimal places)
Therefore, the solution to the expression is approximately 2.1472.
(−2)×(1/5)÷(2/3)×(−5/6)÷(3/4)
(1 point)
Responses
1/6
Start Fraction 1 over 6 End Fraction
2/3
Start Fraction 2 over 3 End Fraction
−1/6
negative Start Fraction 1 over 6 End Fraction
−2/3
First, multiply -2 and 1/5:
(-2) × (1/5) = -2/5.
Then, divide -2/5 by 2/3:
(-2/5) ÷ (2/3) = (-2/5) × (3/2) = -6/10 = -3/5.
Next, multiply -3/5 by -5/6:
(-3/5) × (-5/6) = (3/5) × (5/6) = 15/30 = 1/2.
Finally, divide 1/2 by 3/4:
(1/2) ÷ (3/4) = (1/2) × (4/3) = 4/6 = 2/3.
Therefore, the solution to the given expression is 2/3.
(9)÷(54)×(79)×(−5)÷(72)
(1 point)
Responses
−8
negative 8
−1,225/8
negative Start Fraction 1,225 over 8 End Fraction
8
8
1,225/8
First, perform the division 9 ÷ 54:
9 ÷ 54 = 1/6
Next, multiply the result by 79:
(1/6) × 79 = 79/6
Then, multiply the previous result by -5:
(79/6) × (-5) = -395/6
Finally, divide the result by 72:
(-395/6) ÷ 72 = -395/432
Therefore, the solution to the expression is -395/432.