Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Joey's Science Test > Joey Test Nov 18 > Flashcards

Joey Test Nov 18 Flashcards

1
Q

What is a Chemical Bond?

A

Force that holds 2 or more atoms together

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are Valence Electrons Attracted To?

A

To the Nucleus of another atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Does a Stable or Unstable Bond have a full valance shell?

A

Stable has a full valance shell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How many electrons make up a full valance shell

A

8 electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a covalent bond?

A

Electrons shared between atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a chemical formula?

A

Chemical symbols & numbers that represent the number of atoms in a compound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is an Ion?

A

Atom No Longer electrically neutral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is an ionic bond?

A

Metal donates an electron to a non metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Can you practice drawing a single, double and triple bond?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How draw an Ionic Bond?

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is a metallic bond?

A

2 or more metals share their electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is difference between ionic and metal bond?

A

ionic bond donates metal to an electron..metallic bond is when metal shares electrons with another metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Name 4 Properties of a Metallic Bond

A
  1. Solid at room temperature
  2. High Melting / Boiling Point
  3. Don’t Disolve
  4. Good conductor of heat & electricity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is difference between physical & chemical change?

A

Physical changes don’t produce a new substance, Chemical Change is one or more substance creating new substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Is Brownie Batter physical or chemical change?

A

Chemical Change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a chemical change?

A

one or more substances change into new substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are signs of chemical reaction

A
  1. change in color
  2. change in odor
  3. bubbles form
  4. precipitation forms
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What happens during chemical reaction?

A

Breaking chemical bonds between reactant molecules and forming new bonds between atoms in product particles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the number in front of an element that can be changed called?

A

Coefficient

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the little number to the right of element that can not be changed called?

A

Subscript

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is a combustion reaction?

A

involves a substance combining with oxygen and releases energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is a decomposition reaction?

A

a compound breaks down for 2 or more substances

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is a single replacement?

A

When 1 element replaces another element in a compound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is a double replacement?

A

Negative ions in 2 compounds switch places forming 2 new compounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What is a synthesis reaction?
Reaction where 2 or more substances combine and form 1 compound
26
What happens to energy when you break bonds?
Bonds absorb energy
27
What happens to energy when you form bonds?
Forming bonds releases energy
28
What is Endothermic?
Reactions that absorb energy
29
What is Exothermic Reaction?
Reaction that releases energy
30
What is activation energy?
The minimum amount of energy needed to start a chemical reaction
31
What are factors that affect the rate of reaction?
Surface Area / Temperature / Concentration
32
What are inhibitors?
A substance that slows down or stops a chemical reaction
33
What is it called when 2 or more metals share electrons
Metallic Bond
34
What is the minimum amount of energy needed to start a chemical reaction?
Activation Energy
35
The more particles collide, will the reaction be quicker or slower
quicker
36
What is Surface Area?
Amount of Are Exposed
37
If temperature is cooler..do particles move faster or slower?
Slower
38
An increase in concentration do collisions increase or decrease?
Increase
39
Do smaller particles raise surface area?
Yes
40
What does a catalyst do?
Increases rate of reaction by lowering the activation energy (enzymes)
41
What is it called when enzyme breaks down proteins into smaller pieces
Protease
42
What is an inhibitator
A substance that slows down or stops a chemical reaction
43
What is sometimes used in medicine to attack enzymes in bacteria to slow their growth?
Inhibator
44
What does breaking bonds due to energy?
Absorbs It
45
What does the formation of bonds do to energy?
releases energy
46
What are reactions that absorb energy called?
Endothermic Reactions
47
Is more energy required to break bonds?
Yes
48
What is a chemical reaction that releases thermal energy called?
Exothermic Reaction
49
Which requires more energy, exothermic or endothermic?
exothermic
50
Reactancts = Products + Thermal Energy is Endothermic or Exothermic
Exothermic
51
Reactants + Thermal Energy = Products is Endothermic or Exothermic?
Endothermic
52
Can you change the subscript in a compound and have it stay the same?
No
53
What happens if you change the subscript of an atom?
you have different properties of the atom
54
If you change the coefficient...do properties of atom stay the same?
Yes
55
What is the description of a chemical reaction using element symbols and chemical formulas called?
Chemical Equation
56
When 2 atoms of the same element are bonded together, what called?
Diatomic Molecule
57
What is a Reactant?
Starting Substances
58
What are Products?
Substances produced by a chemical reaction
59
What is the law of Conservation of Mass:
Total mass of reactants = the mass of the products
60
Cutting a piece of cloth is example of what type of change?
Physical Change
61
Can physical changes be undone?
Often, yes
62
What makes your blood red?
Oxygen
63
How are physical and chemical changes the same?
You can see changes
64
What happens when 1 or more substances react to form new substance?
Chemical Change
65
What are 3 steps in chemical reaction?
1. Energy Added 2. Bonds Break 3. Atoms rearrange themselves and bond
66
What called when 2 or more elements share their electrons?
Metallic Bond
67
Do Metallic Bonds Disolve?
No
68
Do physical changes produce new substance?
No
69
Do chemical changes produce new substance?
Yes
70
What is a chemical reaction?
when a substance change causes a chemical change
71
What happens during a synthesis reaction?
2 or more substances combine for 1 compound
72
What happens during a decomposition reaction?
A compound breaks down for 2 or more substances
73
2 Mg + O2 turns to 2MgO is synthesis or decompostion?
Synthesis
74
What called when a compound breaks down for 2 or more substances?
Decomposition
75
When negative ions in 2 compounds switch places forming 2 new compounds, what called?
Double replacement, this is type of chemical reaction
76
Why do you need inhibitors?
because you can make a reaction slower and more controllable. Example is if there is a fire or going to explode you can use an inhibitor to slow it down
77
What is most abundant mealloid?
Silicon
78
what are 4 properties of metalloids?
1. Solids 2. Semi Conductors 3. Color 4. Form Compounds
79
What is the distance between the nuclei of the atom and valance shell called?
Radius
80
What is Ionization Energy?
The ability to move an electron from the valance shell
81
What is the temperature at which a substance turns from liquid to gas?
Boiling Point
82
What type of atoms have same number of protons and electrons?
Neutral Atoms
83
What is the area of space where electrons move around the nucleus called?
Energy Levels
84
How many electrons can be in the lowest energy level?
2
85
How many electrons can be in 2nd energy level?
up to 8
86
What are Valence Electrons attracted to?
The nucleus of another atom, causes a chemical bond
87
What is a chemical bond?
A force that holds 2 or more atoms together
88
Are protons positive or negative?
Positive
89
Are Electrons positive or negative?
Negative
90
What type of charge do Neutrons have?
No Charge

Joey's Science Test (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions