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Ghella [55]
2 years ago
6

Which of the following properties can be used as evidence a chemical reaction has occurred? (Select all that apply)

Chemistry
2 answers:
frutty [35]2 years ago
8 0
Density, odor, and color changes. Hope this helps ฅ^•ﻌ•^ฅ
Stolb23 [73]2 years ago
8 0
A,C,and D are the answers for this question
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Which of the following leads to a higher rate of diffusion?
miv72 [106K]
<h3><u>Answer;</u></h3>

Higher velocity of particles

<h3><u>Explanation;</u></h3>

The diffusion rate is determined by a variety of factors which includes;

  • Temperature such that the higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly and the diffusion rate will be high.
  • Concentration gradient such that the greater the difference in concentration, the quicker the rate of diffusion.
  • Higher velocity of particles increases the diffusion rate as this means more kinetic energy by the particles and hence the particles will mix and move faster, thus higher diffusion rate.
5 0
2 years ago
Arrange the following ions in order of increasing ionic radius.
Zepler [3.9K]

Answer:

Ca 2+ <K  +  <Ar<Cl  −  <S  2−

Explanation:

Ar,K  + ,Cl  − ,S  2− ,Ca  2+

 have the same number of electrons. Their radii would be different because of their different nuclear charges. The cation with the greater positive charge will have a smaller radius because of the greater attraction of the electrons to the nucleus. Anion with the greater negative charge will have the larger radius. In this case, the net repulsion of the electrons will outweigh the nuclear charge and the ion will expand in size. Hence the correct order will be Ca  

2+  <K +  <Ar<Cl  −  <S  2−

 

3 0
2 years ago
What is a conductor?
mel-nik [20]

Answer:

2. An object that transfers heat well

Explanation:

Conductors has closer molecules in which can bump into each other easily to help transfer thermal energy. Examples are iron, steel, gold, copper, and other metals.

4 0
2 years ago
How do you identify a mineral there are six things
LenKa [72]
A good example is the mineral<span> plagioclase. Plagioclase is a member of the feldspar group, but </span>there<span> is more than one type of plagioclase.</span>
5 0
3 years ago
nkfkkffhjhfkfhkhfjhfjhfkjkfhfhkjhfjfhjffhjfhjhfkjfjkhkfjfhkjfhkjkfytn7tnt7n7ouewiqrpqeuwriepwioqeiuoweioqwupeiwouewiuoqperwuewpr
kirill [66]
Well,





I guess the answer would be....


























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6 0
3 years ago
Read 2 more answers
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