Chemistry, 10.10.2020 15:01 bellaisbored202
1. (6.6 A) Students were given four substances and asked to observe their 7 points
characteristics. Their observations are shown in the table below. Which of
the unknown substances is MOST likely a METAL?
Observation of Unknown substances
Unknown
Observation
Appearance
Conduct electricity
NA
Black and gritty
Snaps easily into small
pieces
Yes
Shiny
Bends easily
NO
Blue
Bends and snaps back
into original shape
Yes
Gear
Shatter easily
0 1
O2
3
4
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Answers: 2
Chemistry, 22.06.2019 14:20
Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull
Answers: 1
Chemistry, 23.06.2019 00:40
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.
Answers: 1
1. (6.6 A) Students were given four substances and asked to observe their 7 points
characteristics....
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