What are the 4 different types of chemical reactions? And how to remember them

Answers

Answer 1

Answer: Synthesis, decomposition, single replacement and double replacement.

Answer 2

Answer: Adding on to C5h11no2, examples of the 4 chemical reactions are..
Synthesis A+B= AB (the two elements combine)
Decomposition: AB= A+B (the two elements breakdown)
Single Replacement: AB+C=AC+B (An element is switched with another from the reactant to the product)
Double Replacement: AB+CD=AC+BD (Both elements are switched with another from the reactant to the product)

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Given the reaction below, which is the reduced substance?Mg + Cl2 Right arrow. Mg2+ + 2Cl-
2CI-
CI2
Mg
Mg2+

Answers

Cl2 is the reduced substance

Identify the terms,like terms,coefficients and constants

2+3a+9a

Answers

Like terms : 3a and 9a

Terms: All of them

Coefficients: 3 and 9

Constant : 2

Like terms in algebra are terms that have the same variables and power. Constants contain only numbers, we call them constants because their values don't change. Coefficients are the numbers in front of the variable ex: 5y in that expression 5 is the coefficient. So in the expression 2+3a+9a there is one constant which is 2 the likes terms are 3a and 9a because they have the same variable. And the coefficients are 3 and 9 because they are in front of the variable.

Is the following sentence true or false. very few minerals are compound

Answers

false very few minerals are a compound

What is the number that you never write as a subscript?

Answers

Answer: 1.

Explanation: The number 1 should never be written in a subscript because the chemical symbol is already there.

Answer:

Explanation:

The subscript of 1 is never written in a chemical formula.

Is melting cheese a physical or chemical change it's for science

Answers

In the given question, melting cheese is a type of physical change.

A physical change is defined as a change in the physical properties of a substance, such as its shape, size, or state, without changing its chemical composition.

When cheese is melted, it changes from a solid to a liquid state, but its chemical composition remains the same. The molecules in the cheese are simply rearranged as it is heated, causing it to melt.

Therefore, melting cheese is a physical change. This is because the cheese changes from a solid to a liquid state, but its chemical composition remains the same.

Learn more about physical change here:

brainly.com/question/23918906

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It is a physical change because it is a solid going to a liquid.

Please show information to support your answerWhich of the following is a sign of a chemical reaction?

A. A liquid changes to a solid.

B. A solid changes to a gas.

C. A gas is released from a liquid.

D. A liquid changes to a gas.

Answers

Option C:

A gas is released from a liquid

Hope this will help :)

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DirectionsAnswer each question in the spaceQuestion1. Why does a neutral atom haveno overall charge?2. What determines the charge ofan ion?3. What can you infer about an ionthat has a positive charge?4. What symbol indicates an ionthat has a positive charge?5. What can you infer about an ionthat has a negative charge?6. What symbol indicates an ionthat has a negative charge?Answer