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Honors Chemistry > Unit 7 Test > Flashcards

Unit 7 Test Flashcards

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1
Q

Compounds are formed so atoms can be more…

A

Stable

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2
Q

Any element that has gained or lost electrons is called an…

A

Ion

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3
Q

Positively charged ions are called…

A

Cations

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4
Q

Positive Ions gain/lose electrons to gain a stable octet.

A

Lose

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5
Q

Negatively charged ions are called…

A

Anions

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6
Q

Negative ions gain/lose electrons to gain a stable octet.

A

Gain

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7
Q

The ____ _____ do not form ions because they already have 8 electrons in their outermost energy level which is very stable!

A

Noble Gases

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8
Q

Name of the group that forms a 2+ ion charge.

A

Alkali Metals

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9
Q

Characteristics of Alkali Metals.

A

Not found free in nature.
Extremely Reactive
Very Soft
Luster

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10
Q

The most reactive non-metals because they only need 1 electron to become stable.

A

Halogens

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11
Q

The ____ _____ have many elements that can form more than 1 ion.

A

Transition Metals

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12
Q

Binary compounds are composed of only __ elements and have the ending ___.

A

2
Ide

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13
Q

_____ ions are composed of two or more atoms bonded together with a single charge.

A

Polyatomic

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14
Q

The ____ electrons are those that are used to form ions.

A

Valence

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15
Q

When Ionic compounds form, the overall (net) charge is always…

A

zero

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16
Q

Ions are arranged in a structure called a…

A

Crystal Lattice

17
Q

Characteristics of the results of ionic compounds.

A

High melting/boiling points
brittle
many dissolve in water
electrolytes when dissolved
form a crystal lattice
conduct electricity, only when dissolved in liquid.

18
Q

Roman numerals are used when?

A

To identify the charge on transition metal with more than one charge.

19
Q

Example of a transition metal that does not use a roman numeral in its name:

A

Zn, Ag, Sc

20
Q

What do the subscripts of a formula show?

A

How many atoms of that element are in the compound.

21
Q

When are parentheses used in a formula?

A

When a formula contains more than 1 polyatomic ion.

22
Q

How many atoms make up Li3Po3?

A

7

23
Q

How many atoms make up (NH4)2SO4

A

15

24
Q

All binary compounds end in…

A

ide

25
Q

How many elements are in a binary compound?

A

2

26
Q

What are the seven diatomic molecules?

A

H2, N2, O2, F2, Cl2, Br2, I2

27
Q

What is the name of N2?

A

Nitrogen

28
Q

What is the name of Br2?

A

Bromine

29
Q

What is the name of O2?

A

Oxygen

30
Q

Covalent compound form compounds by _____ electrons.

A

Sharing

31
Q

Why do covalent compounds share electrons?

A

It uses less energy to share electrons and gain an octet than to give and take electrons.

32
Q

Covalent compounds are composed of ___ atoms

A

non-metal

Honors Chemistry (1 decks)

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