This is not chemistry but it's A, off top.
Answer:
CaO
Explanation:
CaO is the only compound that is a non-metal and a non-metal. The rest of the compounds are ionic, or metal and non-metal.
0.0015 kilometers is for sure the answer!
Answer:
catalysts help speed up reactions which implies that they provide a alternative pathway and when there is less activation energy more particles have more energy to react
The property of mixture which describes a mixture are it can be separated by physical methods, it can appear different from different sources and it cannot be described by a chemical symbol or formula.
<h3>What are mixtures?</h3>
Mixtures are the compounds which are formed by the addition or combination of one or two elements or compounds.
As in the mixtures many states of matters are present and it will be filtered by using various physical methods, and it is not chemically shown by single chemical symbol or formula. Mixtures are also of two types:
- Homogeneous mixtures are those in which equal compositions all over the volume is present.
- Heterogeneous mixtures are those in which different composition all over the volume is present.
Hence options (1), (3) and (4) are correct.
To know more about mixtures, visit the below link:
brainly.com/question/24647756
