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Chemistry

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Lorna O'Reilly

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โˆ™ 2021-09-30 20:42:14
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Cards in this guide (20)
What is a synthesis reaction

A synthesis reaction is when two or more substances combine to form another substance.

A synthesis reaction is when there is a combination of two or more substances and a compound results.

What is an indicator

A substance that reveals, through characteristic color changes, the degree of acidity or basicity of solutions. Could also be a light to notify of a components operation.

What are the five properties of acids

wiki user stp anwsering your own questions

Classify the following reaction Zn 2HCl ZnCl2 H2

single-displacement reaction

Are exothermic reactions decomposition reactions or are they synthesis reactions

Synthesis reactions are generally characterized by being exothermic. Decomposition reactions are usually endothermic.

What is it called when two or more chemicals interact to form something new

A chemical reaction

Solid metals undergo greater thermal expansion than liquids do

false

The temperature of an object is a measure of the average thermal energy of the molecules in the object

FALSE (APEX)

True or false The concentration of an acid or base refers to how completely it dissociates in water

false

Ninety degrees Fahrenheit is about 52oC

False

In the equation Q equals mcฮ”T Q represents

the thermal energy

apex

What amount of acid or base dissolved in water called

the concentration

The sum of the kinetic energies and potential energies of all of in the molecules in a substance is called the what energy of the substance

thermal

When a substance goes directly from a gaseous state to a solid state as dry ice does what

Desublimes

Which of the following is an example of redox reaction-

Redox reaction is chemical reactions. This happens when atoms oxidation state changes.

Assuming all the substances below have the same mass which substance below requires the most energy to raise its temperature by 7 deg C using the table to help you answer the question

water

Which one of the following is an example of a strong acid

Hydrochloric acid -APEX;)

On a very hot summer day railroad tracks can buckle causing train delay and derailments select the what the best reason below for the buckling

๐Ÿ˜‚

Changing subscripts is one of the steps of balancing a chemical equation.

false

A steep slope on a phase change graph indicates

Heirhey

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