Answer:
Explanation:
Elements that have most similar properties were placed in the same group on the periodic table and this is done based on the number of valence electron each of the element posses which allow them reach in a similar manner as a member of the same family. A group of element is placed on a a vertical column of the periodic table.
For all element with one valence electron they are labelled with 1A on the group, and are usually the first column followed by 2A until group 8.
1A element are known to be very reactive and form compounds with similar properties with other elements.
Answer:
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Explanation:
hhjcynuu7 was the only person who
3600 years.
Since 65% of the carbon-14 is remaining, we need to get the logarithm to base 2 of 0.65 to determine how many half lives have expired. So: log(0.65)/log(2) = -0.187086643/0.301029996 = -0.621488377
So we know that 0.621488377 half-lives has gone by to the bone sample. Now we just need to multiply by the half-life of carbon-14 which is 5730 years. So: 0.621488377 * 5730 = 3561.128399 years. Rounding to the nearest 100 years gives us 3600 years.
Answer:
It is <u>melting</u> which is a physical change.
Explanation:
