Periodic Table Flashcards
1
Q
What is a compound
A
- Compounds form when substances react together
- Compounds always contain one or more different atoms/elements
- Compounds always have a formula and combine in fixed ratios
2
Q
What is an element
A
- An element is something that cannot be broken down into anything simpler
- All elements are made up of one type of atom
- All the atoms in an element are the same as each other
3
Q
Atom Identity
A
- Each element has a different number of protons( positive particles) in the nucleus and we call this the PROTON NUMBER
- The modern periodic table uses this to order the elements
4
Q
Which element has 9 protons
A
Flourine
5
Q
Which element has a mass of 12
A
Carbon
6
Q
How many protons does chlorine have
A
17
7
Q
How many protons does sodium have
A
11
8
Q
properties of a typical metal when solid
A
good conducter of electricity good conducter of heat shiny heavy typically malleable and ductile sonorous
9
Q
malleable
A
able to be hammered and pressed into shape without breaking or cracking
10
Q
ductile
A
able to be drawn out into a thin wire.
11
Q
properties of a typical non-metal
A
poor conducter of electricity and heat dull light typically not malleable or ductile not usually sonorous
12
Q
Reactions of metal
A
- metals will react with non-metals to form compounds
e.g. Magnesium + oxygen = magnesium oxide - ## Metal oxides will neutralise an acid BUT metals will not react together they will only mix together
13
Q
Reactions of non-metal
A
- Non-metals will react with both metals and non-metals
e. g. Sulfur + oxygen = sulfur dioxide - Non-metal oxides are often gases and when dissolved is acidic
14
Q
Periods
A
the horizontal rows of the periodic table are known as ‘periods’
15
Q
Groups
A
-elements are arranged in columns because their physical and chemical properties are similar and follow a pattern
