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3 years ago

Ionic bonds are different from covalent bonds. identify the characteristics of ionic bonds

2 answers:

6 0

One atom is a metal and one is a nonmetal.
One atom has high electronegativity value, while the other value is really low

Damm [24]3 years ago

5 0

Explanation:

An ionic bond is formed by the sharing of electrons between two chemically combining atoms.

In an ionic bond, there occurs attraction between oppositely charged ions due to which there occurs strong forces of attraction between them. Therefore, ionic bonds are the strongest bonds.

An ionic bond is always formed between a metal and a non-metal.

For example, LiCl is an ionic compound.

In order to break down, ionic bonds require high heat energy.

Whereas a covalent bond is defined as the bond formed due to sharing of electrons between the combining atoms.

Covalent bonds are weak in nature and hence, they can be broken down with less amount of heat energy.

A covalent bond is generally formed between two or more non-metals.

For example, $CCl_{4}$ is a covalent compound.

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3 years ago

A 112 gram sample of an unknown metal was heated from 0.0C to 20.0C. The sample absorbed 1004 J of energy. What was the specific

worty [1.4K]

Answer:

The specific heat of the sample unknown metal is approximately 0.45 J/g °C.

General Formulas and Concepts:
Thermodynamics

Specific Heat Formula: $\displaystyle q = mc \triangle T$

m is mass (g)
c is specific heat capacity (J/g °C)
ΔT is the change in temperature

Explanation:

Step 1: Define

Identify variables.

m = 112 g

ΔT = 20.0 °C

q = 1004 J

Step 2: Solve for c

Substitute in variables [Specific Heat Formula]: $\displaystyle 1004 \ \text{J} = (112 \ \text{g})(c)(20.0 \ ^{\circ} \text{C})$
Simplify: $\displaystyle 1004 \ \text{J} = (2240 \ \text{g} \ ^\circ \text{C})c$
Isolate c: $\displaystyle c = 0.448214 \ \text{J} / \text{g} \ ^\circ \text{C}$
Round [Sig Figs]: $\displaystyle c \approx 0.45 \ \text{J} / \text{g} \ ^\circ \text{C}$

∴ specific heat capacity c is equal to around 0.45 J/g °C.

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Topic: AP Chemistry

Unit: Thermodynamics

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