Science Chapter 4 Test

noble gas

Atoms lose, gain, or share electrons and become chemically stable as ___________.

lose electrons

Is it easier to lose or gain electrons?

Look in your notes for examples of polar and nonpolar.

Look in your notes for examples of polar and nonpolar.

Atoms

Molecules are made up of _____

Covalent bonds

N2(again small 2) this has the strongest what?

13

This diagram of Boron has 3 electrons that means Boron is in Group what?

Ionic bond

This type of bonding loses or gains electrons and a metal and a nonmetal bond to form it. What is it?

1. Covalent bonding 2. Ionic bonding 3. Metallic bonding

What are the three types of bonding?

electron dot diagram

a model that represents valence electrons in an atom as dots around the elements chemical symbol

polar molecule

a molecule that has a partial positive side and a partial negative

valence electrons

the outermost electrons are called what?

Covalent bonding

Carbon and Oxygen bonding is what kind of bonding?

1st-2 e- 2nd-8e- 3rd-18e- 4th-32e- 5th-50e-

How many electrons can the 1st-5th levels have on a Boer model?

4

How many valence electrons does an atom of carbon have?

ionic bond

If an electron transfers one atom to another atom, what type of bond will most likely form?

pooled metals with metals

In metallic bonding, electrons are ______ and what bonds with what?

conductive

In metallic bonding, you get pure metals. These metals are highly _______which means it makes electricity happen.

sea

In metallic bonds they do not attack but form a ______ around the atom.

Full outermost energy level

Stable elements have to have a _______________________________________ to be called stable.

stable

The atoms of noble gases do NOT bond easily with other atoms because their valence electrons are

Stronger

The more valance electrons two atoms share the ______ the bond between those two atoms

bonds

Valence electrons determine an atoms maxium number of ___

Compound

Which of the following is a pure substance that contains two or more elements?

Atomic number

You figure out how many electrons to put on a boer model by looking at the elements what?

Valance

________ electrons are the only electrons that participate in chemical bonding. They also have the most energy of the electrons in the atom.

metallic bond

a bond formed when many metal atoms share their pooled valence electrons.

valence electron

an outermost electron of an atom that participates in chemical bonding.

conduct

to serve as a medium through which something can flow

covalent bond

A chemical bond formed when two atoms share one or more pairs of valence electrons.

molecule

A group of atoms that are holded together by covalent bonding and acts as an independent unit.

chemical formula

A group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound.

polar molecule

A molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons.

ion

An atom that is no longer electrically neutral because it has lost or gained valence electrons.

Ionic Bond

An atom with 2 valence electrons and an atom with 6 valence electrons are likely to form a what?

Valence electrons

Covalent bonds typically form between the atoms of elements that share what?

Least Greatest

Electrons closest to the nucleus have the ____amount of energy and electrons farther from the nucleus have the ___ amount of energy.

gain or lose

In ionic bonding 1 electron will ___ an electron and another electron will _____ another electron

lose(positive ion) gain(negative ion)

In ionic bonding the metal will ____ the electron and the nonmetal will _____ the electron.

Make sure to look at examples for how to do ionic, metallic, and covalent bonding.

Make sure to look at examples for how to do ionic, metallic, and covalent bonding.

covalent

Some compounds are made of _____ molecules

ions

Some compounds are made up of ____

Group 16

The element selenium is a nonmetal. It is an unstable atom that can form two bonds with other atoms. What group is it in?

determined

The exact position of electrons in an atom can not be _____.

4 bonds

The image shows an electron dot diagram for silicon. How many total bond can one atoms of this metalloid make with other atoms?

Bonds an atom can form

The number of unpaired dots on an electron dot diagram is often the number of _______________________________.

8 electrons

The outermost energy level has to have ____ electrons in order to be stable.

Gilbert Lewis

The scientist that developed the electron dot diagram

Covalent bonding

What bonding shares electrons and non-metals are bonded together?

water molecules

What contains polar bonds?

Both types of bonds involve valence electrons

What do ionic bonds and covalent bonds have in common?

electron dot diagram

What does the method of representing atoms and the electrons in their outer energy levels?

Non-metals

What has the properties of poor conductors?

The chemical makeup of a compound

What info does a chemical formula provide?

They conduct electricity poorly.

What is a characteristic of most non-polar compounds?

Covalent bond

What is formed between atoms when they share electrons?

nonpolar

What is it called when electrons are shared equally?

pooled valence electrons

What is shared in a metallic bond?

Metals, metalloids, and nonmetals

What is the location of metalloids metals and nonmetals on the periodic table left to right?

Chemical bonds

What joins atoms together?

Metal and nonmetals

What type of element pairs can form ionic bonds?

gaining one electron

What would make bromine a group 17 element more similar to a noble gas?

Metallic bond freeley

When a metal is bonded with another metal? There electrons are pooled and they flow _______.

polar

When electrons are shared unevenly is called ______.

Metals and non-metals electrons

When elements gain or lose electrons what bond and metals lose what?

positive ion

When metals lose electrons, it can form a _______ ________.

negative ions

When non-metals gain electrons, it can form what?

Carbon

Which atom can form four bonds?

ionic

Which compound is formed by the attraction between negatively and positively charged ions?

group 17

Which group of elements on the periodic table forms a covalent compound with other nonmetals? Group 1, 2,17, or 18.

# of valance electrons in each atom

Which information does the chemical formula CO2 (should be a little 2) not give you?

ion

Which of the following is an atom that has gained or lost an electron and is no longer neutral?

C. sodium and chlorine

Which two elements are likely to form a compound that has ionic bonds? A. carbon and oxygen B.nitrogen and oxygen C. sodium and chlorine D. sulfur and hydrogen

a positive metal ion and a negative nonmetal ion

Which would most likely be joined by an ionic bond?

chemical bond

a force that holds two or more atoms together

chemical bond

a force that holds two or more atoms together.

ion

an atom that has lost or gained valence electrons

ionic bond

an atom that has lost or gained valence electrons

bond

force that holds atoms together in a compound

Compound

material that is made up of two or more different kinds of atoms jointed by chemical bonds

ionic bond

the attraction between positively and negatively charged ions in an ionic compound