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DENIUS [597]
3 years ago
13

A property is a characteristic of a substance that can be observed and does not change the identity of the substance. T/F

Chemistry
1 answer:
Murljashka [212]3 years ago
4 0
The correct answer is false. The statement given does not describe a property in general. However, it speaks of a specific type of property which is the physical property.  This property is the one that does not change the identity of a substance. A property can also be a chemical property where the identity of a substance is changed.
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how many electrons in an atom can share the quantum numbers n=3, l=2, and ml=2? A.) 2 B.) 6 C.) 4 D.) 8
Tems11 [23]
The answer would possible be letter a

3 0
3 years ago
The reaction of aluminum with bromine is shown here. The equation for the reaction is
m_a_m_a [10]
Answer is (b)

2,3,1 is the stoichiometry

The values in front of the elements are the stoichiometric values
(Since Al2Br6 has no value in front, it's considered 1)
5 0
3 years ago
6 At STP, which element is a good conductor of electricity?(1) chlorine (3) silver
alexgriva [62]
For an object to conduct electricity it should have free or delocalised electrons that are free to pass the charge and hence take part in conducting electricity.
From the given choices
Chlorine is a halogen existing as a diatomic gas. Iodine too is a halogen and 2 Iodine atoms held together by covalent bond. Cl - Cl bonds and I-I bonds are  covalent bonds. the outer electrons of Cl and I take part in covalent bonds therefore they are fixed and not free to move about. therefore no free electrons to conduct electricity.
Sulfur is a solid that too is held together by covalent bonds so it does not have free electrons to conduct electricity.

Silver is a metal and a general property of metals are their ability to conduct electricity.
metal structure are metal ions tightly packed together. when the metal atoms are tightly packed their valence electrons are removed and delocalised. Positively charged metal ions are embedded in a sea of delocalised electrons.
therefore there are delocalised electrons that can conduct electricity 


answer is 3) silver
3 0
3 years ago
Read 2 more answers
WHATS THE DIFFERENCE BETWEEN Fe AND FE2+
Grace [21]

Answer:

Fe is just the shortened version of Iron whereas Fe2+ is a positive ion,cation to be more specific

4 0
3 years ago
Which of these is a chemical property? color, compressibility, heat of combustion, malleability
Flauer [41]
Chemical changes only happen when the object changes form. Color is a physical property because you're not changing the object that you have, compressibility is also a physical property because you still have the same substance before and sfter, malleability again is another physical. Heat of combustion is physical, when you burn things it changes the substance. :)
6 0
3 years ago
Read 2 more answers
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