What kind of cycle might you learn at school?

Answers

Answer 1
Answer: You might learn the cycles of the moon the cycle of a bug from larva to death It depends which cycle you are thinking about
Answer 2
Answer: Rock cycle, water cycle, just some examples.

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Why is it dark at night?

Answers

Because the sun sets; the earth is spinning but the Sun isn't. As the Earth spins different areas of land receive light and the rest dark. This is also connected with the changes of time in different countries.
For the same reason why it's dark in shadows - there is little to no light. 

The half of the Earth facing the Sun, is what shadows the half of the Earth facing away from the Sun. 

It's dark at night because night-time means you're in the Earth's shadow.

The process of isotopes breaking down and emitting particles, such as alpha or beta, to form a new substance.

Answers

Answer: The process is called as nuclear decay process.

Explanation:

Nuclear reaction are defined as the reactions in which nucleus of an atom is involved.

Isotopes under decay process in order to attain stability.

Unstable isotopes known as parent isotopes undergo various decay processes to form stable isotopes known as daughter isotopes.

The various decay processes are:

  • Alpha decay: In this process, alpha particle is released.
  • Beta decay: In this process, beta decay is released.
  • Gamma decay: In this process, gamma decay is released.

Hence, the process is called as nuclear decay process.

This is called decay

Can “happy, full” elements like He, and Xenon bond with other atoms? Explain what this is like.

Answers

No because they have their complete octet. They are completely filled and don't need to bond with any other atoms. The full atoms that are happy are the noble gases.

What are noble gases ?

Noble gases have electron shells with full valence. Valence electrons are the atom's outermost electrons and are typically the only electrons involved in chemical bonding.

Noble gases are elements that have completely filled their valence shells, completing their octets. Helium, Neon, Argon, Krypton, Xenon, and Radon are examples of noble gases.

Thus, the elements like He, and Xenon can not form bond with other atoms because they have completely filled orbital so, they are not loosing or gaining any electron from other atoms, that's why they are called “happy, full” elements.

To learn more about the noble gases, follow the link;

brainly.com/question/11764545

#SPJ6

No because they have their full octet. They are full and don't need to bond with any other atoms. The full atoms that are happy are the noble gases.

---- If you need anymore chemistry help ask me....because im very good at chemistry.

The half life of radon-222 is 3.8 days. How Much of a 100g sample is left after 15.2 days

Answers

Answer:  

6.2 g  

Explanation:  

In a first-order decay, the formula for the amount remaining after n half-lives is  

N = (N_(0))/(2^(n))  

where  

N₀ and N are the initial and final amounts of the substance  

1. Calculate the number of half-lives.  

If t_{(1)/(2)} = \text{3.8 da}  

n = \frac{t}{t_{(1)/(2)}} = \frac{\text{15.2 da}}{\text{3.8 da}}= \text{4.0}

2. Calculate the final mass of the substance.  

\text{N} = \frac{\text{100 g}}{2^(4.0)} = \frac{\text{100 g}}{16} = \text{6.2 g}

What type of waves move energy forword but the source move up and down

Answers

Transverse waves 
I think

What are characteristics of a good scientific investigation

Answers

The characteristics are

Hypothesis and observation


I hope that's help:0