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Basile [38]
3 years ago
13

1. Sometimes scientists need to be able to replicate the results of a scientific experiment. Explain in what situation(s) this w

ould be necessary.
2. Scientific theories can be modified as new information becomes available. Explain the possibility of this happening and why it may change a theory.

3. Using the steps of the scientific method, explain an example of how you use the scientific method in your daily life.

4. Compare and contrast science and pseudoscience. Explain why one is only used in the scientific community to solve problems.

5. Create a number line in your notes using the metric system. What are the base units for the metric system. Which is bigger, a kg or g?
Chemistry
1 answer:
Andrej [43]3 years ago
4 0
I need this also I’m just here for points
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Characteristics of an atom
Doss [256]

Answer:

It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms. Other subatomic particles may be found in association with these three types of particles.

Explanation:

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

3 0
3 years ago
A solution contains one or more of the following ions: Ag , Ca2 , and Co2 . Lithium bromide is added to the solution and no prec
koban [17]

Answer:

Ca^{2+}  and  Co^{2+}

Explanation:

Given:

A solution contains one or more of the following ions such as Ag, Ca_2 and Co_2

Here the Lithium bromide is added to the solution and no precipitate forms

Solution:

Since with LiBr no precipitation takes place therefore Ag+ is absent

Here on adding Li_2SO_4 to it precipitation takes place.

Precipitate is as follows,

Ca^{2+}(aq)+SO_4^2^-(aq)----->CASO_4(s)

Thus,

Ca^2^+ is present

When Li_3PO_4 is added again precipitation takes place.

Therefore the reaction is as follows,

Co^2^+(aq)+PO_4^3^-(aq)------>Co_3(PO_4)_2(s)

Therefore,

Ca^{2+}  and  Co^{2+} are present in the solution

3 0
3 years ago
Can light move through space even though there are no molecules?
amid [387]

Answer:

This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...

7 0
2 years ago
In which period would you find Mercury?
Mamont248 [21]

Answer:

period 6

Explanation:

3 0
2 years ago
Read 2 more answers
Besides energy form the sun, what force helps move water molecules through the water cycle
Angelina_Jolie [31]

Answer:

Aside from the sun, the water cycle is driven by the transpiration in plants and respiration in humans. Humans and animals both release water vapor in the atmosphere.

Explanation:

I hope this helps you! :D

6 0
3 years ago
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