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djyliett [7]
4 years ago
6

Which of these reactions can be classified as synthesis reactions?

Chemistry
1 answer:
Andre45 [30]4 years ago
7 0

Answer:

the third and fourth option is correct for synthesis reaction

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What are the differences between amorphous and crystalline solids? Give an example of each.
Eddi Din [679]

Answer: orderly arrangement of particles

Explanation:

In a crystaline solid, the particles that compose the solid are arranged or packed in an orderly manner to form a three dimensional crystal lattice with a defined structure. Sodium chloride is a crystaline solid.

In an amorphous solid, the particles that compose the solid aren't arranged in an orderly manner hence the solid tends to be brittle, e.g glass

7 0
4 years ago
Which of the following does not change the energy of the reactants relative to the activation energy?
creativ13 [48]

Answer:

Adding a catalyst

Explanation:

  • Activation energy is the minimum amount of energy needed to start a chemical reaction
  • A Catalyst is a material that increases the rate of a reaction by lowering the activation energy. In other words, a catalyst act to provide an alternative route for the reaction which has a lower activation energy.
6 0
3 years ago
Read 2 more answers
Draw the expanded structural formula for the condensed formula (CH3)2CHCH2OCH2CH3 . Draw all hydrogen atoms
prisoha [69]

We have that the Complete Expanded Structure of (CH3)2CHCH2OCH2CH3 is given in the attachment below

From the Question

(CH3)2CHCH2OCH2CH3

Generally for the condensed formula (CH3)2CHCH2OCH2CH3

We consider that this is a single bond connecting them

We consider

Hydrogen H(1)

Oxygen(8)

Carbon(6)

In conclusion

The Complete Expanded Structure of (CH3)2CHCH2OCH2CH3 is given in the attachment below.

For more information on this visit

brainly.com/question/24102840

5 0
3 years ago
When placed in a freezer, liquid water turns into solid ice. What best describes this change?
skelet666 [1.2K]

Answer:

The water molecules slow down, stronger attractions form between them, and the molecules are pulled closer together.

Explanation:

In solids the packing of the particles is closer and tighter thus increasing the intermolecular attraction. This makes solids rigid with a definite shape, size and volume. On the other hand in liquids the packing of the particles is loose thus decreasing the intermolecular attraction. This makes liquids able to flow, and takes the shape and volume of the container in which they are placed.

3 0
3 years ago
Chose the element pairings that are likely to react with each other<br> Na and K or Na and Br
kaheart [24]

Answer:

Na k

Explanation:

because na is a metal and potassium is also a metal and both are active metal so is less likely to react as no bond is formed between them

7 0
3 years ago
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