Chemical elements
are the simplest of substances.
Which of the following is not an example of compound?
The following are examples of NOT compounds.
Br2 , bromine
, is a diatomic element, or a molecular element. Only one element is in its structure though, so it is not a compound. Ar , argon, is an atom; thus, it cannot be multi-atomic, and consequently is not a compound.
Which of the following is the simplest pure substance?
Chemical elements
are the simplest of pure substances.
Is sugar a mixture?
Sugar is a
compound
that is formed by a combination of three atoms: carbon, hydrogen and oxygen. Since these three atoms are chemically joined with each other thus they form a compound in nature.
What are three compounds?
- Water – Formula: H
2
O = Hydrogen
2
+ Oxygen. … - Hydrogen Peroxide – Formula: H
2
O
2
= Hydrogen
2
+ Oxygen
2
… - Salt – Formula: NaCl = Sodium + Chlorine. …
- Baking Soda – Formula: NaHCO
3
= Sodium + Hydrogen + Carbon + Oxygen
3
… - Octane – Formula: C
8
H
18
= Carbon
8
+ Hydrogen
18
Is gold a pure substance?
Gold is an element in the periodic table. It is found in the group 11 and period 6 and has atomic number 79 . … Gold is found as pure metal in nature and pure gold is referred as 24-karat gold. So
gold is a pure substance
.
Is wood a pure substance?
Wood is not a pure substance
, it is a mixture, because it is composed of compounds such as cellulose, hemicelluloses, and lignin which are made up of elements such as carbon, hydrogen, and oxygen. … Wood is a heterogeneous mixture of different materials.
Which is a pure substance?
A
substance that has a fixed chemical composition throughout
is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
Is Coca Cola a mixture?
A
homogeneous mixture
is defined as “the mixture, which has uniform composition through out its mass”. EXAMPLE: Air, sugar solution, salt solution, alloys, soft drinks (Pepsi, Coca-Cola etc.) mass are known as heterogeneous mixtures”.
Is coffee a mixture?
Coffee is
a solution
, not a compound or mixture, as it includes a solute that dissolves into a solvent. … Coffee can also be considered a mixture since it involves two mixed substances, but this is too vague. This article will explain the differences between physical and chemical changes.
Is alcohol a mixture?
In chemistry, alcohol is an
organic compound
that carries at least one hydroxyl functional group (−OH) bound to a saturated carbon atom. The term alcohol originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks.
What are the 10 compounds?
- Calcium Carbonate.
- Sodium Chloride.
- Methane.
- Aspirin.
- Potassium Tartrate.
- Baking soda.
- Acetaminophen.
- Acetic Acid.
What are the 4 types of compounds?
- Metal + Nonmetal —> ionic compound (usually)
- Metal + Polyatomic ion —> ionic compound (usually)
- Nonmetal + Nonmetal —> covalent compound (usually)
- Hydrogen + Nonmetal —> covalent compound (usually)
What are 4 examples of compounds?
- Sugar (sucrose – C12H22O11)
- Table salt (sodium chloride – NaCl)
- Water (H2O)
- Carbon dioxide (CO2)
- Sodium bicarbonate (baking soda – NaHCO3)
What is the five pure substance?
Examples of pure substances include
tin, sulfur, diamond, water, pure sugar (sucrose)
, table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances that are chemical elements.
Which is the best example of a pure substance?
- Hydrogen gas.
- Gold metal.
- Sugar (sucrose)
- Baking soda (sodium bicarbonate)
- Ammonia.
- Diamond.
- Copper wire.
- Silicon chip.
