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Anuta_ua [19.1K]
4 years ago
13

What 3 categories are elements divided

Chemistry
1 answer:
cricket20 [7]4 years ago
6 0
Classification of the Elements. The next thing in our review is to classify the elements into three groups. These three groups are: metals, nonmetals, and inert gases. Let's look at where these groups are located on the periodic table and correlate them with the ability to lose and gain electrons.
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Select all true statements about hybridization, of a second-row element, changing from sp2 to sp3. (max of 3 choices) a. The ato
Neko [114]

Answer:

a. The atom will go from a two-dimensional configuration to a three dimensional configuration.

d. The bond angle will increase.

f. The number of unhybridized p orbitals will decrease.

Explanation:

Sp2 is the atomic bond in which orbitals mixes with only two orbitals. These orbitals form three sp2. When two carbon atoms are overlapped they form sigma bond by overlapping of sp2 bonds. Sp3 bond is created when there is one lone molecule available for combination. When the bonding is updated from sp2 to sp3 then unhybridized orbitals will decrease causing the bond angle to increase.

8 0
3 years ago
Water has a density of 1.0g/ml * Physical Property Physical Change Chemical Property Chemical Change
Daniel [21]

The density of water is a physical property.

You can measure it without changing the water to a different substance.

It is <em>not a physical change</em> because the water does not change to ice or steam.

You can observe a <em>chemical property</em> or a <em>chemical change</em> only if the water <em>changes to a different substance</em>.


5 0
3 years ago
A compound contains 30. percent sulfur and 70. percent fluorine by mass. the empirical formula of the compound is
iogann1982 [59]
Assume 100 g of compound. This turns percent to mass. Calculate moles: 

S ---> 30/32 = 0.9375 
F ---> 70 / 19 = 3.6842 

get whole number ratio: 

0.9375 / 0.9375 = 1 
3.6842 / 0.9375 = 3.93 = 4 

Answer : SF4
7 0
3 years ago
Read 2 more answers
Can our bodies produce salt also is it possible to use our body oil to cook
GaryK [48]
No because your body can't take that much salt
3 0
3 years ago
The footprint of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossil?
m_a_m_a [10]

Answer:

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of - Trace Fossils

Explanation:

A trace fossil or ichnofossil is defined as a geological record of biological activity. These provide us with indirect evidence of life in the past, such as the footprints, burrows, tracks, borings, etc that are left behind by animals, rather than the preserved remains of the body of the actual animal itself.

8 0
3 years ago
Read 2 more answers
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