Chemistry Flashcards
1
Q
What is Fe?
A
Iron
2
Q
What is Ca?
A
Calcium
3
Q
What is Ag?
A
Silver
4
Q
What is He?
A
Helium
5
Q
What is C?
A
Carbon
6
Q
What is Li?
A
Lithium
7
Q
What is Cu?
A
Copper
8
Q
What is Pb?
A
Lead
9
Q
What is S?
A
Sulphur
10
Q
What is Cl?
A
Chlorine
11
Q
What is Mg?
A
Magnesium
12
Q
What is H?
A
Hydrogen
13
Q
What is Hg?
A
Mercury
14
Q
What is P?
A
Phosphorus
15
Q
What is O?
A
Oxygen
16
Q
What is Ar?
A
Argon
17
Q
What is Si?
A
Silicon
18
Q
What is K?
A
Potassium
19
Q
What is Au?
A
Gold
20
Q
What is N?
A
Nitrogen
21
Q
What is B?
A
Boron
22
Q
What is Al?
A
Aluminum
23
Q
What is Zn?
A
Zinc
24
Q
What is Be?
A
Beryllium
25
What is Na?
Sodium
26
What is Ni?
Nickel
27
What is F?
Fluorine
28
What is As?
Arsenic
29
What is Sb?
Antimony
30
What is Sn?
Tin
31
What is Cr?
Chromium
32
What is Mn?
Manganese
33
What is Ne?
Neon
34
What is Br?
Bromine
35
What are valence electrons?
The outer shell of electrons
36
What do valence electrons determine?
How an atom will chemically react
37
How do you draw a Lewis-dot diagram?
1. Write the element symbol
2. Look at the group number of the element to see how many valence electrons it has.
3. Draw the electrons using the around the clock rule
38
What are the horizontal rows in the periodic table?
Periods
39
What are the vertical columns in the periodic table?
Groups
40
What is a physical property?
A characteristic observed with your senses
41
What is a chemical property?
A characteristic behavior observed when a new substance is formed
42
What is a physical change?
A change in form or state. No new substance is formed
43
What is a chemical change?
A new substance is formed
44
Name some physical properties
State of matter, hardness, melting point, color, solubility, clarity, viscosity, boiling point
45
Name some chemical changes
bubbles forming, precipitate forming, heat being produced, color might change, light might be produced
46
Is solubility a physical or chemical property?
Physical
47
Physical or chemical property: sour taste
physical
48
Physical or chemical property: reaction with acid
chemical
49
Physical or chemical property: boiling point
physical
50
Physical or chemical property: density
physical
51
Physical or chemical property: reacts with water
Chemical
52
Physical or chemical property: supports combustion
chemical
53
Physical or chemical change: an apple being cut
physical
54
Physical or chemical change: silver tarnishing
chemical
55
Physical or chemical change: food digesting
chemical
56
Physical or chemical change: alcohol evaporating
physical
57
Physical or chemical change: sugar dissolves in water
physical
58
Physical or chemical change: wood rotting
chemical
59
Physical or chemical change: ice melting
physical
60
What is the definition of matter?
Anything that has mass and takes up space
61
What are elements?
Things that are made of only one kind of atoms and cannot be broken down into simpler substances
62
What are compounds?
Contains 2 or more elements in a fixed proportion
63
What is an ionic compound?
Its a compound formed between a metal and non-metal to fill a valence shell.
64
How do you write formulas for ionic compounds?
1. Write the symbols of the elements
2. Write their ionic charges
3. Criss-cross the charges
4. Write the formulas in full
65
What are molecular compounds?
One or more non-metals forming a full valence shells by sharing electrons with other non-metals.
66
What does the prefix "mono" mean?
One atom
67
What does the prefix "di" mean?
Two atoms
68
What does the prefix "tri" mean?
Three atoms
69
What does the prefix "tetra" mean?
Four atoms
70
What does the prefix "penta" mean?
Five atoms
71
What does the prefix "hexa" mean?
Six atoms
72
What does the prefix "hepta" mean?
Seven atoms
73
What does the prefix "octa" mean?
Eight atoms
74
What does the prefix "nona" mean?
Nine atoms
75
What does the prefix "dec" mean?
Ten atoms
76
How do you write molecular formulas?
1. Write the symbols of the elements
2. Write the subscript for the number of atoms represented by the prefix
77
How do you write the names of the formulas?
1. Write the elements names
2. Change the ending of the second element to "ide"
3. Use the subscript number to determine the prefix
78
What are Polyatomic ions?
Groups of atoms that stay together and carry an overall atomic charge.
79
How do you write polyatomic formulas?
1. Write the elements symbols ( metal first, then polyatomic)
2. Write the valence charge for each
3. Criss-cross the charges
80
81
If there is just a symbol of an element, how many atoms of that element are there?
One atom
82
What is a subscript?
A number written beside an element that shows you how many atoms of that element are in the molecule.
83
What is a co- efficient?
A co efficient is a number written in front of a chemical formula to show the number of molecules of a compound. Also multiplies the atoms.
84
How many atoms are there in this compound?
Ba(PO4)2
1 barium atom, 2 phosphorus atoms, 8 oxygen atoms
85
How many atoms are in this compound?
3 NaCN
3 sodium, 3 carbon, 3 nitrogen
86
How many atoms are in this compound?
2 Ca(NO3)2
2 calcium, 4 nitrogen, 6 oxygen
87
How do you write skeleton equations?
You just need to turn the word equations into numbers and symbols
88
What would the word and skeleton equations for this reaction look like?
Aluminum resists corrosion because it reacts with oxygen gas in air to form a protective coating of aluminum oxide.
word: Aluminum + oxygen -> aluminum oxide
Skeleton: Al + O -> AL203
(remember that aluminum and oxygen's charges change)
89
90
Write the skeleton equation for this reaction?
Cesium + Calcium chloride ▶️ Cesium chloride + calcium
Cs + CaCl2 ▶️ CsCl + Ca
91
Write the skeleton for this reaction?
Aluminum chloride + sodium carbonate ▶️ aluminum carbonate + sodium chloride
AlCl3 + NaC ▶️ Al(CO3)3 + NaCl
