What attractions hold atoms together in a covalent bond?

The electric attractions that are present between the shared electrons and the protons in each nucleus hold the atoms together in a covalent bond.

When atoms form a polar covalent bond, they gain some partial electric charge. The atom with the greater attraction for electrons has a partial negative charge. The other atom has a partial positive charge which has relatively less attraction for electrons.

The strength of attraction between polar molecules is stronger than attraction between non-polar molecules.

What happens to the charge on atoms when they form a polar covalent bond?

When atoms form a polar covalent bond, they gain some partial electric charge. The atom with the greater attraction for electrons has a partial negative charge. The other atom has a partial positive charge which has relatively less attraction for electrons.

The strength of attraction between polar molecules is stronger than attraction between non-polar molecules.

The electric attractions that are present between the shared electrons and the protons in each nucleus hold the atoms together in a covalent bond.

Name the two factors that determine whether a molecule is polar.

The shape of the molecule and the type of atoms it is composed of are the two factors that determine whether a molecule is polar.

The size of the molecule and the type of electron it is composed of are the two factors that determine whether a molecule is polar.

The smell of the molecule and the type of compounds it is composed of are the two factors that determine whether a molecule is polar.

Compare the strength of attractions between polar molecules to the strength of attractions between nonpolar molecules.

The strength of attraction between polar molecules is stronger than attraction between non-polar molecules.

The strength of attraction between polar molecules is weaker than attraction between non-polar molecules.

What does the name and formula of an ionic compound describe?

The name of an ionic compound must distinguish the compound from any other compound containing the same elements. The formula of an ionic compound describes the ratio of the ions in the compound.

The name of an ionic compound must distinguish the compound from any other elements containing the same elements. The formula of an ionic compound describes the ratio of the cations in the compound.

The name of an ionic compound must distinguish the compound from any other formulas containing the same elements. The formula of an ionic compound describes the ratio of the anions in the compound.X

What do the name and formula of a molecular compound describe?

The name and formula of a molecular compound describe the type and number of atoms in a compound molecule.

The name and formula of a molecular compound describe the size and shape of atoms in a compound molecule.

The name and formula of a molecular compound describe the color and texture of atoms in a compound molecule.

What suffix is used to indicate an anion?

The name for the anion uses part of the name of the non-metal with the suffix-ide.

The name for the anion uses part of the name of the non-metal with the suffix-ion.

Why are Roman numerals used in the names of compounds that contain transition metals?

When a metal forms more than one ion, the name of the ion contains a Roman numeral to indicate the charge on the ion.

When a metal forms more than one ion, the name of the ion contains a Roman numeral to indicate the number of atoms in the ion

What is a Polyatomic Ion

A covalently bonded group of atoms that has a positive or negative charge and acts as a unit.

A covalently bonded group of atoms that has a positive or negative charge and acts as a compound

A covalently bonded group of atoms that has a positive or negative charge and acts as a element

What holds metal ions together in a metal lattice

The cations in a metal form a lattice that is held in place by strong metallic bonds between the cations and the surrounding valence electrons

The anions in a metal form a lattice that is held in place by strong metallic bonds between the anions and the surrounding valence electrons

The ions in a metal form a lattice that is held in place by strong metallic bonds between the ions and the surrounding valence electrons

What characteristics of a metallic bond explain some of the properties of metal

The mobility of electrons within a metal lattice explains some of the properties of metal

The mobility of electrons within a metal lattice explains some of the types of metal

The mobility of electrons within a metal lattice explains some of the groups of metal

How can scientists design alloys with specific properties

Scientists can design alloys with specific properties by varying the types and amounts of elements in an alloy

Scientists can design alloys with specific properties by varying the groups and colors of elements in an alloy

Explain why the metallic bonds in some metals are stronger than the bonds in other metals

The greater the positive charge of the positive ion created, the stronger the strength of the metallic bond.

The greater the negative charge of the negative ion created, the stronger the strength of the metallic bond.

Why are metals good conductors of electric current

They take up space in the steel making the configuration stiffer

They take up space in the steel making the configuration softer

They take up space in the steel making the configuration bendier

How does adding carbon to steel make the steel harder and stronger?

The smaller carbon atoms fit in the spaces in the larger iron atoms in the lattice. The carbon atoms form bonds with iron atoms. This makes the lattice harder and stronger.

The smaller carbon atoms fit in the spaces in the larger iron atoms in the lattice. The carbon atoms form bonds with ion atoms. This makes the lattice harder and stronger.

The smaller carbon atoms fit in the spaces in the larger iron atoms in the lattice. The carbon atoms form bonds with metal atoms. This makes the lattice harder and stronger.

Which element has a higher melting point, potassium in group 1A or calcium in group 1B? Give a reason for your answer.

Potassium because the alkali metals are typically harder, more dense, causing them to have a higher melting point.

Calcium because the alkaline earth metals are typically harder, more dense, causing them to have a higher melting point.

Can two different elements form a metallic bond together?

Yes and No, because it forms an alloy

No, because it would form an alloy

Yes because it would form an alloy

Chapter 5,6 Science Test

Authored by Chesney B

Science

9th Grade

NGSS covered

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element in group 1A of the periodic table, not including hydrogen.

the elements in group 2A of the periodic table.

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one-twelfth the mass of a carbon-12 atom

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a column of elements in the periodic table.

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elements in group 7A of the periodic table.

elements with properties that fall between those of metals and nonmetals.

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elements that are good conductors of heat and electric currents.

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Chapter 5,6 Science Test

element in group 1A of the periodic table, not including hydrogen.

the elements in group 2A of the periodic table.

one-twelfth the mass of a carbon-12 atom

a column of elements in the periodic table.

elements in group 7A of the periodic table.

elements with properties that fall between those of metals and nonmetals.

elements that are good conductors of heat and electric currents.

elements in group 8A of the periodic table.

elements that are bad conductors of heat and electric currents.

a row in the periodic table of elements the time required for one complete cycle of a periodic motion a unit of geologic time into which geologists divide eras.

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