Users' questions

Which combination of elements forms crystalline solids that will dissolve in water producing a solution of ions that can conduct an electric current?

Which combination of elements forms crystalline solids that will dissolve in water producing a solution of ions that can conduct an electric current?

A combination of elements that forms water soluble crystalline solids is known as a salt. An example of a salt is NaCl. Na is sodium which is a metal and Cl is chlorine which is a nonmetal.

What type of chemical bond does the sharing of a pair of electrons form group of answer choices?

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

What products are formed from the complete reaction of hydrocarbons or carbohydrates with oxygen?

Regardless of the type of hydrocarbon, combustion with oxygen produces 3 products: carbon dioxide, water and heat, as shown in the general reaction below.

What type of bonding takes place in NaOH?

ionic. What kind(s) of bonding takes place in NaOH? both covalent and ionic. Three hydroxide ions are needed to form a neutral ionic compound with an aluminum ion.

What combination of elements would likely form an ionic bond?

A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.

What types of liquids typically form amorphous solids?

Liquids that consist of large molecules or a mixture of molecules form amorphous solids. This is because their particles have high mass and density due to which their movements are more restricted.

Which compound do atoms form bonds by sharing electrons?

covalent compounds
In covalent compounds, atoms form covalent bonds that consist of electron pairs shared between two adjacent atomic nuclei. An example of a covalent compound is ammonia.

Which pair of atoms is held together by a covalent bond?

A covalent bond happens when the positive nuclei from two different atoms are held together by their common attraction for the shared pair of electrons held between them. Covalent bonds are strong bonds. Atoms that share pairs of electrons form molecules. A molecule is a group of atoms held together by covalent bonds.

What are the products obtained on complete combustion of hydrocarbons?

Complete combustion of hydrocarbons (without impurities) in the presence of enough oxygen produces water vapor and carbon dioxide.

Are carbohydrates formed during photosynthesis?

Carbohydrates are formed in green plants by photosynthesis, which is the chemical combination, or “fixation”, of carbon dioxide and water by utilization of energy from the absorption of visible light.

What intermolecular forces are present in NaOH?

Ion-Dipole Forces (40-600 kJ/mol) • Interaction between an ion and a dipole (e.g. NaOH and water = 44 kJ/mol) • Strongest of all intermolecular forces. An instantaneous dipole can induce another dipole in an adjacent molecule (or atom).

Why is NaOH both ionic and covalent?

As strong covalent bonds exist between the atoms of a polyatomic ion, it is difficult to break it. In each hydroxide ion the Oxygen atom and the H atom are bonded via covalent bonds, but the OH- and Na+ are held together in a crystal lattice via ionic bonds, thus making NaOH an ionic compound.

How are chemical reactions distinguished from pure substances?

PLAY A mixture can be distinguished from a pure substance because it can be separated by physical means. The representative elements have one to eight valence electrons. An atom becomes a positive ion by gaining an electron. Atoms gain or lose electrons in chemical reactions in order to increase their energy state.

What kind of compound can atoms from Group IIA form?

Atoms from an element in group IIA are allowed to react with atoms from an element in group VIIA. What type of compound is likely to form? ionic covalent polar None of the above.

What is the correct name for the compound, CuCl2?

What is the correct name for the compound, CuCl2? copper chloride copper dichloride copper(II) chloride copper chloride(II) copper(II) chloride. How is the physical state of elements and compounds identified in an equation?

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