Mr royer s unit 14 15 review
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Mr. Royer’s Unit 14 & 15 Review. “Chemical Bonding” and “Chemical Reactions” flashcards. Question. Most elements want to find “happiness” by…. Answer. Chemically bonding with other elements. Question. Gas bubbles is an indication that a…. Answer.

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Mr. Royer’s Unit 14 & 15 Review

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Mr royer s unit 14 15 review

Mr. Royer’s Unit 14 & 15 Review

“Chemical Bonding” and “Chemical Reactions” flashcards


Question

Question

Most elements want to find “happiness” by…


Answer

Answer

Chemically bonding with other elements


Question1

Question

Gas bubbles is an indication that a…


Answer1

Answer

A chemical reaction (chemical change) has occurred.


Question2

Question

Chemical changes create “new” matter, but what is really happening is…


Answer2

Answer

A “rearrangement” of elements amongst compounds.

Use this comparison…there are 52 cards in a deck, a chemical change just means we reshuffled the cards around into a new order


Question3

Question

A chemical bond is…


Answer3

Answer

A force that brings elements together to create compounds.


Question4

Question

When matter changes its shape, but retains (keeps) it’s chemical properties we know…


Answer4

Answer

A physical change has occurred.

Example: glass bottle is dropped and hits the floor, shattering into pieces –its still glass!


Question5

Question

Which sub-atomic particle is responsible for chemical bonds?


Answer5

Answer

Electrons


Question6

Question

When two substances interact and a color change occurs we know a…


Answer6

Answer

Chemical change has occurred.


Question7

Question

Compounds and molecules are formed through…


Answer7

Answer

Chemical reactions!


Question8

Question

Ice changing to water is an example of a…


Answer8

Answer

A physical change

Nothing new created here, just changing its shape!


Question9

Question

Between elements, how many electrons are shared/transferred to make a bond?


Answer9

Answer

8

8 is the magic number of chemistry!!!


Question10

Question

Light, fire, or heat indicates what type of change has occurred?


Answer10

Answer

Chemical change


Question11

Question

What does “valence” in valence electron(s) mean?


Answer11

Answer

Furthest away from nucleus AND the electrons that dictate how an element bonds with others

The Noble Gasses all have 8 valence electrons, so they don’t bond with any other element!


Question12

Question

What’s the easiest way to determine how many valence electrons an element has?


Answer12

Answer

Use the “A-series” number!

1A = 1 valence electron

2A = 2 valence electrons…and so on

8A is the max and 8 is the “magic number” of chemistry!!


Question13

Question

You cannot “undo” the product of what type of change?


Answer13

Answer

Chemical change

Ya can’t undo what’cha done did. Na-mean?


Question14

Question

What is the “octet rule” of chemistry?


Answer14

Answer

Elements transfer or share electrons in order to achieve 8 valence electrons between them (create stability).

Successful electron dot diagrams show an “octagon” when the dots are connected.


Question15

Question

How are electrons distributed in an ionic bond?


Answer15

Answer

Electrons are transferred between elements


Question16

Question

What type of elements comprise an ionic bond?


Answer16

Answer

Must have 1 metal and 1 non-metal


Question17

Question

What type of bond happens between metal elements?


Answer17

Answer

Metallic bond

Metal + metal = metallic


Question18

Question

What type of bond happens between non-metal elements?


Answer18

Answer

Covalent bond


Question19

Question

How are electrons distributed among elements in a covalent bond?


Answer19

Answer

The electrons are shared.


Question20

Question

In a covalent bond, when the electrons are shared equally the covalent bond is said to be…


Answer20

Answer

Non-polar

Think:

Polar = pull (uneven share)

Non = no

Non-polar = no pull

Its kinda backwards, but that’s what it means!


Question21

Question

When two substances react and a solid (precipitate) is produced, then a what type of change has occurred?


Answer21

Answer

Chemical change


Question22

Question

What type of change (physical or chemical) does a firework best exemplify?


Answer22

Answer

Chemical!

Light/heat/fire emitted

Color change

Can’t get it back to the original product (new product after)


Question23

Question

What is happening amongst the shared electrons of a polar covalent bond?


Answer23

Answer

Uneven sharing

Polar = uneven pull

Mathematically, it must be

7 + 1 = 8 valence electrons

6 + 2 = 8 valence electrons

5 + 3 = 8 valence electrons


Question24

Question

What type of bond (ionic or covalent) becomes “neutral” when elements combine?


Answer24

Answer

Ionic bonds –charges cancel out

Remember, only covalent bonds can be polar (has a +/-charge due to uneven sharing)

Anion = Negative

Cation = Positive


Question25

Question

Single, double, and triple shared pairs happen amongst…


Answer25

Answer

Covalent bonds


Question26

Question

Crystal structures, high melting points, and electrical conductivity belong to what bond type?


Answer26

Answer

Ionic bonds


Question27

Question

What type of bond creates a molecule?


Answer27

Answer

Covalent bond


Question28

Question

Definite & predictable shapes along with low melting points belong to which bond type?


Answer28

Answer

Covalent bonds


Question29

Question

What bond type happens between a large quantity of covalently bonded elements?


Answer29

Answer

Polyatomic bond

Poly = many


Question30

Question

What type of bond will occur between Lithium (Li) and Fluorine (F)?


Answer30

Answer

Ionic bond

1 metal + 1 non-metal


Question31

Question

What type of bond will happen between Copper & Zinc?


Answer31

Answer

Metallic bond

Metal + metal


Question32

Question

What type of bond would happen between Hydrogen (H) and Fluorine (F)?


Answer32

Answer

Covalent bond

Non-metal + non-metal

Remember, Hydrogen is the ONLY non-metal element on the metal side of the P. Table


Question33

Question

What type of bond type creates a true “compound?”


Answer33

Answer

Ionic Bond


Question34

Question

What type of bond would happen between…

Nitrogen (N) + Lithium (Li) + Hydrogen (H) + Sodium (Na)?


Answer34

Answer

Ionic bond

At least 1 metal AND 1 non-metal are present.


Question35

Question

CH4 would be an example of an ionic or covalent bond?


Answer35

Answer

Covalent bond

ALL non-metal elements


Question36

Question

What type of change, physical or chemical, demonstrates new chemical properties in the matter observed?


Answer36

Answer

Chemical change


Question37

Question

During an apparent chemical change, energy in the form of heat, is absorbed by the reactants. This type of chemical reaction is known as…


Answer37

Answer

An endothermic reaction

Endo = in = enter


Question38

Question

A chemical equation is a short hand way of illustrating what type of change?


Answer38

Answer

A chemical change

Noticing a pattern here?!?


Question39

Question

How many reactants are present in this chemical equation?

H + Li + Na + N HLiNaN


Answer39

Answer

4

4 separate elements (can be compounds too) are on the LEFT side of the arrow


Question40

Question

What is the name for the matter produced in a chemical reaction?


Answer40

Answer

Product


Question41

Question

How many elements are present in this compound?

4H3P


Answer41

Answer

2…Hydrogen(H) and Phosphorus (P)


Question42

Question

How many total atoms are present in this atom?

4H3P


Answer42

Answer

16

4 x the 3 H = 12 +

4 x the 1 P = 4 … =16


Question43

Question

Since we cannot create or destroy matter, we know a chemical reaction must be this on both sides of the reaction?


Answer43

Answer

Balanced, even, or equal


Question44

Question

When a reaction releases heat, as seen with a fire, during a chemical reaction we term this as a …


Answer44

Answer

Exothermic reaction

Ex = out = exit

Thermic = heat


Question45

Question

What classification of a reaction takes multiple reactants and combines them into 1 complex product?


Answer45

Answer

A synthetic reaction

A + B + C = ABC

Let the plus signs guide you


Question46

Question

What is the term for the energy that speeds up a reaction?


Answer46

Answer

A catalyst


Question47

Question

What type of classification is denoted when elements swap spots, once or twice, during a reaction?


Answer47

Answer

Replacement (or displacement) reaction

One, or two, elements are replacing each other after a reaction.


Question48

Question

What do we call the minimum amount of energy required to start a chemical reaction?


Answer48

Answer

Activation energy

To activate is to start


Question49

Question

What is an inhibitor’s job in a chemical reaction?


Answer49

Answer

To slow, or stop, a chemical reaction.


Question50

Question

When compounds breakdown into smaller or multiple products we classify this reaction as…?


Answer50

Answer

A decomposition reaction.

ABC = A + B + C

Or

ABC = A + BC …either way there are more products than reactants!!!

The plus signs are only on the product side


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