1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
xxMikexx [17]
3 years ago
15

Please, I need at least accurate answers for my Sound Knowledge Check for my Science class.

Chemistry
2 answers:
mrs_skeptik [129]3 years ago
8 0
Pretty sure it’s absorption
Alla [95]3 years ago
5 0

Answer:

1.A

2.A

3.C

4.C

5.B

6.A

You might be interested in
Hello guys what is good! <br><br> What are all the elements of the P block?
Ghella [55]

boron, carbon, nitrogen, oxygen and flourine families in addition to the noble gases.

_________________________________________________________

also to answer the 'hello guys what is good!':nothin u?

__________________________________________

o0o0o0o0o0o0o0o0o0o0o0o0o0o0o0o0o0o0o0o0

6 0
2 years ago
Compare and contrast an element and a compound.<br>PLZ HELP ITS DUE TOMORROW!!​
hjlf

Answer:

Explanation:

The answer is that "elements are a single atom and compounds are a mixture of two elements or more." Elements are atoms that have protons, neutrons, and electrons. Compounds are mixtures with two or more elements.

Hope this helps.

7 0
3 years ago
Which of the following is an example of CHEMICAL weathering? (select all
larisa86 [58]
Rust on a rock that contains iron
Mineral absorbs water and changes into a new substance
5 0
3 years ago
Determine the full electron configurations:<br><br> 1. K+ (Z=19)<br><br> 2. Zn2+ (Z=30)
mixas84 [53]

Answer:

1=  K⁺= (Z=19) = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰

2 = Zn²⁺= (Z = 30) =1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰, 3d¹⁰

Explanation:

When an atom lose or gain the electron ions are formed. There are two types of ions cation and anion.

Cation are formed when atom lose the electron.

Anion are formed when an atom gain the electron.

In given question potassium loses its valance electron and form K⁺ cation. Thus its electronic configuration will be written as,

₁₉K⁺ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰

While the electronic configuration of potassium in neutral form is:

₁₉K = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

The atomic number of zinc is 30 and its electronic configuration is:

₃₀Zn= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s², 3d¹⁰

When zinc atom loses its 2 valance electrons the electron configuration will be,

₃₀Zn²⁺= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰, 3d¹⁰

7 0
3 years ago
An Arrhenius acid has
Leona [35]
The answer is (3) hydrogen ions as the only positive ions in solution. One ionic compound must have positive ion and negative ion at the same time. The Arrhenius base has hydroxyl ion as only negative ions in solution.
4 0
3 years ago
Read 2 more answers
Other questions:
  • The process in which an organic acid and an alcohol react to form an ester and water is known as esterification. Ethyl butanoate
    10·1 answer
  • In a game of "Clue," Ms. White is killed in the conservatory. You have a device in each room to help you find the murderer— a sp
    9·1 answer
  • A 520-gram sample of seawater contains 0.317 moles of NaCl. What is the percent composition of NaCl in the water?
    11·1 answer
  • Indicates which of the following radical chemical species and explains why
    9·1 answer
  • What would be the temperature change 3.0 g of water absorbed 15 J of heat
    15·1 answer
  • The Andes Mountains are found along the western coast of South America. Which kind of plate boundary is responsible for this mou
    10·1 answer
  • A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 1
    12·2 answers
  • Over-encouraging lesser skilled players can lead to embarrassment.<br> a. True<br> b. False
    13·2 answers
  • A buildup of charges in an object is called
    11·1 answer
  • The specific heat of wood is 2.03 J/g.°C. How much
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!