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Westkost [7]
2 years ago
13

Need help with this chem test please

Chemistry
1 answer:
Mandarinka [93]2 years ago
5 0

B: A precipitate of silver chloride forms when solutions of sodium chloride and silver nitrate are combined.

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Metallic behavior is generally associated with elements with partially filled p orbitals. elements with unpaired electrons. elem
Mila [183]

Answer:

Elements with low ionization energies.

Explanation:

The ionization energy of an atom reffers to the amount of energy that is required to remove an electron from the gaseous form of that atom or ion.

The greater the ionization energy, the more difficult it is to remove an electron. The ionization energybis one of the indicator that shows the reactivity of an element. Elements with a low ionization energy such as metals are usually reffered to as a reducing agents and form cations, this give metals the tendency to

give away their valence electrons when bonding, whereas non-metals tend to take electrons.

Metallic elements have different properties such as shiny, heat and electricity conductivity . They are malleable and ductile Some metals, such as sodium, are soft and can be cut with a knife. while some are very hard such as iron.

4 0
3 years ago
Using your own words define a scientific law
OleMash [197]
A scientific law is a statement that is universally accepted and answers the "how?" question.

Hope this helps!
4 0
3 years ago
How do you make a 3M solution of KBr? How many moles of KBr are 1 liter of a 0.3M solution?
pashok25 [27]
Molarity= moles/liter, so you would need 3mol KBr/1 liter
(0.3M)(1L)= 0.3mol KBr
8 0
3 years ago
Read 2 more answers
¡¡¡PLEASE HELP!!! I'm stuck on a question..
Reptile [31]

 The half  life  of uranium- 238  is

 4.46 x10^9  years


 Explanation

Half life  is the time  taken for  the  radioactivity  of   a isotope  to fall  to half  its  original  value.

The  original   mass  of uranium-238  is  4.0 mg

  Half  of original  mass of uranium  = 4.0  mg /2 = 2.0  mg

since  it  take 4.46  x 10^ 9 years  for  the sample   to half  the half life of uranium -238 = 4.46 x10^9 years

7 0
3 years ago
How do you prove law of conservation of mass??
Cerrena [4.2K]
The Law of Conservation of Mass<span> states that </span>matter <span>can neither be created nor destroyed in a chemical reaction.</span>
3 0
3 years ago
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