A synthesis reaction is a reaction between at least two compounds in which a. one breaks down into at least two products.
b. a compound is decomposed by an electric current.
c. a compound burns in the presence of oxygen.
d. a new compound is formed.

Answers

Answer 1

Answer:

Answer: d. a new compound is formed.

Explanation:

1. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example: $Li_2CO_3\rightarrow Li_2O+CO_2$

2. Electrolytic decomposition is a type of chemical reaction in which one reactant gives two or more than two products. on passing electric current.

Example: $H_2O\rightarrow H_2+(1)/(2)O_2$

3. Combustion is a type of chemical reaction in which fuel is reacted with oxygen to form carbon dioxide and water.

Example:

$C_6H_(12)O_6+O_2 \rightarrow CO_2+H_2O$

4. Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.

Example: $Li_2O+CO_2\rightarrow Li_2CO_3$

Answer 2

Answer: D; a new compound is formed (like A + B --> AB)

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Which form of coal is used in explosives

Answers

Answer: Coal Dust

Explanation: Grounded-up coal, coal dust, is used in explosives.

Which of the following is an extremely reactive family of elements?a. noble gases
c. carbon family
b. halogens
d. metalloids

Answers

Answer:

b. Halogens

Explanation:

Chemical reactions are associated with the 'breaking' of old bonds and formation of new bonds. Since valence electrons are the ones that participate bonding, therefore the reactivity of elements must depend on the ease with which these electrons can be lost or gained.

Noble gases have fully filled (n²np⁶) valence electron configuration and are highly stable and inert.

Carbon family have less that half filled p-orbitals (ns²np²) in their valence configuration and are not very reactive. Metalloids have their reactivity in between metals and non-metals.

Halogens in contrast have a valence electron configuration of ns²np⁵. They only need one more electron to complete their octet and become stable. As a result they are highly reactive i.e. they readily attract electrons and form new bonds.

The halogens are extremely reactive, because they only need ONE MORE valence electron till they become stable, meaning they would bond and be very reactive.

In this diagram, medium A represents water and medium B represents air. The phenomenon in this diagram, moving from A to B, is calledA) diffraction.
B) dispersion.
C) refraction.
D) resolution.

Answers

The answer is C) Refraction.
Hope this helps!

Hey there

The correct answer is (C)

= refraction

The same amount of force is applied to bowling balls one of the balls Waze 8 pounds and the other weighs 13 pounds which bowl will have a greater acceleration