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krok68 [10]
3 years ago
10

What are the properties of elements related to

Chemistry
1 answer:
Wewaii [24]3 years ago
6 0
<span>The correct answer is the number of valence electrons. Valence electrons are the electrons in the outermost orbit of an atom. The number of valence electrons determines the chemical properties of an atom, for example how the atom will react in a chemical reaction. In each group (or column) of atoms, each atom will have the same number of valence electrons, and will thus have similar chemical properties.</span>
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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
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In water, naoh almost completely separates into na+ and oh- ions. thus, naoh is _____.​
stepan [7]
<span>In water, naoh almost completely separates into na+ and oh- ions. thus, naoh is Stong base.
Strong bases and strong acids completely ionized in the water,So when NaOH is added into water, it is completely ionized and forms Na+ and OH- ions and it shows that it is a strong base.</span>
3 0
3 years ago
Suppose you have two cubes of exactly the same volume. You weigh them and find a mass of 8.91g for one and 8.88g for the other c
Yuliya22 [10]
The two substances have different densities. Density can be affected by the temperature of a substance. Since they have to same volume but weigh differently, they have different densities. Remember, density = mass/volume
3 0
3 years ago
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What is the covalent<br> bonding of calcium chloride​
algol13

Answer:

<u>Calcium chloride does not have a covalent bond , it is an ionic bond (which means donation of electrons takes place )</u>. The charge of calcium ions is +2, while the charge of sodium ions is -1. The molecule of calcium chloride contains one calcium ion (+2) and two chloride ions (-1), resulting in an overall charge of 0, or neutral.

<u>IONIC BONDING IN CALCIUM CHLORIDE</u> (CaCl_2)

Electron sharing produces covalent compounds, while electron donation produces ionic compounds. CaCl_2 is a salt with an ionic bond. This is because calcium takes up an electron to each of the chlorine atoms, resulting in Ca^2^+ions for calcium andCl^- ions for chlorine. At room temperature, it behaves like a normal ionic halide and is solid. Calcium is a metal with a non-metal sulphate bond.

<u>Thus , Calcium chloride have ionic bonds present on them . No covalent bonds takes place in calcium chloride.</u>

5 0
3 years ago
An atom has an atomic number of 12 and a mass number of 25. How many neutrons does the atom have?
dem82 [27]
Simple. The atomic number is the number of protons (12) and the mass number is the number of neutrons and protons combined. So you'd subtract 12 from 25 (25-12=) and that'd get you 13 as your answer. If you need to find the number of electrons, it'll be the same as the number of protons unless it has a certain charge and if it does, if it's positive it has more protons (+) than electrons (-), if it is negative it has more electrons (- negatively charged) than protons (+ positively charged)
6 0
3 years ago
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