CHEMISTRY HIGH SCHOOL

Identify the following as a compound or a mixture: quartz (SiO2)

Answers

Answer 1
Answer: quartz (SiO2) is a compound. A compud is the combination of two or more elements. It is a compound because three elements are formed, the silicon and the two atoms of oxygen.

Related Questions

What would be the mass of Iron(II) chloride obtained when 450g of Sodium Chloride is added to Iron(II) oxide?
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What is the mass in grams of 0.94 moles of sodium bicarbonate. NaHCO3?​

HELP UNDERSTAND, PLEASE! In a reaction, 15 moles of carbon dioxide are produced from 5 moles of iron (III) oxide and 15 moles of carbon monoxide. What is the mole ratio of carbon dioxide to carbon monoxide?

15:5

5:15

1:3

1:1

Answers

My best guess has to be 1:3


15:15 is equal to 1:1

What is the chemical formula for one phosphorus atom, three chlorine atoms, one oxygen atom?

Answers

O=PCL3 that is what it is

A substance that cannot be broken down into other substances by ordinary chemical procedures is a(n) __________ a) element
b) compound
c) isotope
d) proton
e) molecule

Answers

Answer:

A

Explanation:

An element is a substance that cannot be broken down into simpler substances using ordinary chemical procedures. To disintegrate an element, procedures like nuclear reactions needed to be used.

In fact, it was thought of that the elements are indivisible during the days of Dalton, but advances in science and technology has shown that these elements could be broken down albeit not easily

Final answer:

An element is a substance that cannot be broken down into other substances by ordinary chemical methods. It is the basic unit of all matter. Examples of elements include gold, silver, and carbon.

Explanation:

A substance that cannot be broken down into other substances by ordinary chemical methods is called an element. This is because elements are the fundamental materials of which all matter is composed. For instance, gold, silver, and carbon are examples of elements. Unlike compounds, isotopes or molecules, an element is made up of the same type of atom and cannot be decomposed into simpler substances by any ordinary chemical processes.

Learn more about Element here:

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What is the difference between an exothermic and an endothermic reaction?A. Endothermic reactions absorb heat.

B. Exothermic reactions absorb heat.

C. There are no changes in heat during either reaction.

D. Endothermic reactions release heat.

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answer D

Explanation:hope thhis helped

Eric notices that his flashlight does not turn on when he flips the switch. What is the least appropriate hypothesis for Eric to make?

Answers

there is a loose circut

What is the ionic equation when sodium carbonate reacts with iron chlorite

Answers

Assuming It is Iron (II)

Na2CO3 + Fe(CLO2) --> FeCO3 + Na2(CLO2)

FeCO3 forms a precipitate in aqueous solution

(2Na+) + (Fe2+) + (CLO2(2-)) + (CO3(2-)) --> FeCO3 + (2Na+) + (CLO2)(2-)) 

Sodium and Chlorite ions become spectator ions as they do not form precipitates on both sides of equations

(Fe2+) + (CO3(2-)) --> FeCO3 
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Atoms in a stay in a fixed position and have no freedom to move.
Hydrogen and helium in the universe were formed by which of these phenomena?a. Big bang b. Fusion in small stars c. Fusion in very large stars d. Supernova