CHEMISTRY MIDDLE SCHOOL

Elements and compounds are two types of what

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Answer 1
Answer:

In the given question, elements and compounds are two types of pure substances.

A pure substance is a substance that is made up of only one type of particle, either an atom or a molecule.

An element is a pure substance that is made up of only one type of atom. Elements cannot be broken down into simpler substances by chemical means. There are 118 known elements, each with its own unique properties.

A compound is a pure substance that is made up of two or more different types of atoms that are chemically bonded together in a fixed ratio. Compounds can be broken down into simpler substances by chemical means, such as by heating or reacting with other chemicals.

Therefore, pure substances are classified into two types: elements and compounds.

Learn more about pure substance here:

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Answer 2
Answer: Elements and compounds are two types of substances ( I think). An element is any material made up of one type of atom- there could be multiples of this atom though for example oxygen which has a formula of 02. A compound is a substance made up of more than one type of atom for example H2OHope this helped! :)

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A piece of titanium metal has a massive 67.5 g no volume of 15 cm³ what is the density of the titanium

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Answer:

3.4

Explanation:

Give two examples in your everyday experience where diffusion occurs. Can you think of a situation of where this might be harmful?

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The first example of diffusion is smoking a cigarette when u light it it spreads through the air. 
The second example is lighting a candle in a room it the smoke spreads through the air. 
Smoke can be very bad for the air and the people around because it can cause many problems with your breathing. 

Will give brainliest!! What percentage of a substance remains after 7 half-lives have passed?
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Answers

Answer:

0.78

Explanation:

Source: Just took the Test

What is matter im confused

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Matter is pretty much solids, liquids, and gases
matter is the gavity in which it is also any subject that you could find

How many number of orbital in n=3?​

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There are 9 orbitals in n=3. To find the number of orbitals in any energy level is n^2

Fill in the following information for the element *if your good at these pls go to my profile and answer more related questions.*

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Answer:

element name: Europium

Period: 6

Group: 9

Family: rare earth family of metals

Explanation:

Answer:

Period: 6 block

Group: f block

Family: Lanthanides
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