CHEMISTRY HIGH SCHOOL

Which list of elements from Group 2 on the Periodic Table is arranged in order of increasing atomic radius?(1) Be, Mg, Ca (3) Ba, Ra, Sr
(2) Ca, Mg, Be (4) Sr, Ra, Ba

Answers

Answer 1
Answer: 1) Be, Mg, CaBe, Mg, Ca, Sr, Ba, Rb are increasing layers
Answer 2
Answer: According to the periodic table, as you go down a group, atomic radius increases due to increasing number of electron shells. Therefore, your answer (1) Be, Mg, Ca.

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Which of the following gases are typically used for colorful lighting when an electric current is applied?A) hydrogen and helium
B) argon and krypton
C) fluorine and chlorine
D) oxygen and nitrogen

Answers

B) Argon and Krypton
The unreactive nature of noble gases allows them to be applied in such places without the risk of poisonous leaks or other disasters.
B)Argon and Krypton is applied for that..........

Draw a model that compares the arrangement of the subatomic particles of oxygen-16 to another isotope, oxygen-18.​

Answers

Explanation:

Answer and Explanation:

Oxygen-16 and oxygen-18 differ in structure only in that oxygen-18 has two more neutrons in its nucleus than oxygen-16 has.

There are three known stable isotopes of oxygen (8O): 16O, 17O, and 18O. Radioactive isotopes ranging from 11O to 26O have also been characterized, all short-lived.

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Climatology is a subspecialty of

Answers

Climatology is a subspecialty of a Climate and for how the climate changes. This is averaged out from over a set of a period of time.

I hope this helps! ;D

What the total number of neutrons in a atom of 0-18?

Answers

the answer is: 10
I could be wrong

Why is the total mass always conserved in a chemical reaction? Be sure that your explanation includes the discussion of atoms and bonds.

Answers

Conservation of mass means that mass can not be created and even destroyed. This hold true with energy. During a chemical reaction, atoms were never created during the process. Also, during the process they were not destroyed. Atoms just change in form, connect to a different configuration or made into smaller or larger molecules but never created or destroyed. 

In the past, investigators would look at which two types of cues when trying to determine if someone was lying? Biased and unbiased


Verbal and non-verbal


Quiet and loud


Simple and complex

Answers

Answer : Verbal and non-verbal communication wad used by Investigators in the past when trying to determine if someone was lying.

Explanation: In the Verbal communication information is transferred from one person to other by speaking.

Non-verbal communication includes Facial expressions , eye contact , body language, eyes blinking etc.

If someone is lying he or she will easily dermined by applying above things.
Verbal and nonverbal.

They would look for shakiness of the voice (verbal) or darting eyes (nonverbal), and other things to that same effect.
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