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
arsen [322]
3 years ago
15

An element is matter that is composed of one type of (atom/quark). 8. the unit of measurement used for atomic particles is the (

atom size/atomic mass unit). 9. atoms of the same element that have different numbers of neutrons are called (isotopes/electron clouds). 10. in the periodic table, elements are arranged by increasing atomic (power/number).
Chemistry
1 answer:
9966 [12]3 years ago
6 0
<span>Q!)
An element is matter that is composed of one type of atom.
Atoms make up elements. If its made of one type of atom, its called an element.
eg: Na is an element and made up of Na atoms only. If its a compound its made of different types of atoms, e.g.: H</span>₂O is a compound made of H atoms and O atoms.<span>
 
Q2)</span><span> the unit of measurement used for atomic particles is the atomic mass unit.
this is the unit used to measure size of an atom. One atomic mass unit is roughly equivalent to the mass of a nucleon, nucleons could be either protons or neutrons as they both have the same mass. Atomic mass unit can also be defined as 1/12th the mass of a 12-C atom.


Q3)
 atoms of the same element that have different numbers of neutrons are called isotopes.
isotopes are when when atoms have the same number of protons and electrons but different numbers of neutrons. Since these atoms have the same number of protons they are of the same element, but neutron number changes therefore atomic mass changes too.

Q4)</span><span> in the periodic table, elements are arranged by increasing atomic number.
the atomic number is characteristic of the element. atomic number is the number of protons the atoms has. While the number of electrons and neutrons may vary within atoms of the same element, the protons usually dont change. Therefore its characteristic for the element. Periodic table, elements are arranged in order of increasing atomic number, by doing so elements with similar characteristics fall into the same column/ groups.</span>
You might be interested in
Which of Newton's Three Laws is BEST described by the following statement: A ball dropped from the 10th story of a hotel had mor
Zolol [24]

Answer:

I believe the answer is Newton's Second Law

Explanation:

Newton's Second Law states that the acceleration of an object will count on how much mass and the amount of force that is applied.

The bowling ball was dropped from the 10th story window and had more force than when the ball was dropped from the 5th story window because the 10th story window gave the bowling ball more acceleration.

8 0
3 years ago
why do you think the purple cabbage indicator used in this experiment is called "red cabbage"? where is it typically used in foo
tatiyna

Answer:

Red cabbage juice contains a natural pH indicator that changes colors depending on the acidity of the solution. The pigment in red cabbage that causes the red color change is called flavin (an anthocyanin). ... At a lower pH, more hydrogen ions are in solution, and therefore the solution is acidic

Actually I don't know but I tried so I hope it helped u!

4 0
3 years ago
HELP!! An unknown solution has a pH reading of 8.4. Which statement is true about this solution?
yarga [219]

Answer:

D- a weak base

Explanation:

The ph scale goes from 1-10 a solution over 7ph is classified as basic. A solution thats 8.4 is only 1.4 over 7pH, making it a weak basic solution. An example of a strong base would be a solution with a pH of 9.2 (for example).

8 0
3 years ago
What is the name for potassium oxide's structure? Give two properties of potassium oxide.
Anna71 [15]

Answer:

- The name for the potassium oxide's structure is ionic.

Properties:

- High melting point.

- Soluble in water.

Explanation:

- The ionic structure it is formed by a cation (atom with positive charge) and an anion (atom with negative charge). In this case, potassium is the cation and the oxigen is the anion.

- Since potassium oxide is an ionic compound, it has a high melting point, because of the strong bonds. Also, it is soluble in polar solvents, like water, because its ions generate polarity in the molecule.

8 0
1 year ago
True or false in a chemical reaction some of the atoms will be changed into different type of atoms​
Anika [276]

Answer:

It's false

Explanation:

7 0
2 years ago
Other questions:
  • What volume of concentrated nitric acid (15.0M) is requiredfor
    12·1 answer
  • In a neutralization reaction ____
    13·1 answer
  • The term “3 FeCI 2” in a balanced equation says
    13·1 answer
  • Constituent elements of bronze
    13·1 answer
  • What type of chemical bond is the strongest type of bond?
    7·1 answer
  • A chloride of this element is 67.2% chlorine by mass. In a 100 g sample how many moles of chlorine are there? (This info will be
    9·1 answer
  • 4.93x10^25/(6.02 x 10^23)
    7·1 answer
  • A 3L sample of an ideal gas at 178 K has a pressure of 0.3 atm. Assuming that the volume is constant, what is the approximate pr
    15·1 answer
  • A student decides to dissolve crackers in their soup as fast as possible. They must first increase the surface area of the crack
    13·1 answer
  • Which of the following happens when an ionic bond is formed? (1 point)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!