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Flauer [41]
3 years ago
5

Why do covalent compounds tend to have lower melting points than ionic compounds?

Chemistry
2 answers:
vitfil [10]3 years ago
6 0
Because ionic compounds' strong bonds form network structures, which have a stronger attraction than the covalent compounds which are molecules.
Advocard [28]3 years ago
4 0
Simple molecular substances consist of molecules in which the atoms are joined by strong covalent bonds. Their molecules are held together by weak forces, so these substances have low melting and boiling points. ... They have high melting and boiling points.
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Why does a solid change to liquid when heat is added?
steposvetlana [31]
When a solid is heated, the particles are given more energy and start to vibrate faster. at a certain temperature, the particles vibrate so much that there order structure breaks down. at this point the solid melts into liquid
7 0
3 years ago
Why does the sun appear very large compared to the other stars
Ivanshal [37]

Answer:

the other stars are much farther away from Earth than our sun

6 0
3 years ago
what is an empirical formulaWhat is the percent composition by mass of nitrogen in (NH4)2CO3 (gram-formula mass = 96.0 g/mol)?
Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

Percentage composition = 0.14583 * 100

Percentage composition = 14.583%

3 0
3 years ago
If u answer will answer the brainlest
klio [65]

Answer:

the electricity dissipated, because of the time.

Explanation:

electricity dissipates.

6 0
2 years ago
(Q014) Silicates a. are classified on the basis of what kind of metals they contain. b. form through the evaporation of water. c
Leni [432]

Answer: d. have the silicon-oxygen tetrahedron as their structural unit.

Explanation:

Silicates are anions that have both Oxygen and Silicon as the basis of their structure. These two form a tetrahedron type structure that enable them to be useful for a whole lot of things.

Silicates are very abundant on Earth as they comprise around 95% of the Earth's crust as well as the upper mantle which explains why they are mostly found in igneous rocks.

3 0
2 years ago
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