1.Which statement best describes an oxidation-reduction reaction?(1 point)

A. a chemical reaction in which there are fewer products than reactants

B. a chemical reaction that involves oxygen

C. a chemical reaction in which electrons are released from the system

D. a chemical reaction in which electrons are transferred between reactants

2.Beryllium (Be) has four electrons. Fluorine (F) has nine electrons. Which chemical formula shows the correct subscripts for the product of the reaction when beryllium and fluorine combine?(1 point)

A. Be2F

B. BeF

C. Be2F2

D. BeF2

Use the reaction to answer the question.

2KCl → 2K + Cl2

Which type of reaction is shown?

(1 point)

A. combination

B. displacement

C. decomposition

D. combustion

The correct statement that describes a Redox reaction is ( D ) ; A chemical reaction in which electrons are transferred between reactants.
The chemical formula that shows the correct subscripts is ( D ) BeF₂
The type of reaction that is shown is ; ( C ) decomposition reaction

A Redox reaction ( oxidation-reduction reaction ) involves the exchange/transfer electrons between reactants and the change in the oxidation number of the molecules involved in the reaction changes when an electron is either gained or lost.

Given that the Be has four ( 4 ) electrons and Fluorine has nine ( 9 ) electrons when they combine Fluorine will be left with an excess of electrons therefore the correct chemical formula will be BeF₂

The breaking up of an element into its smaller parts in a chemical reaction is known as a decomposition reaction.

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