Learning Outcomes X Flashcards
What is the smallest particle of matter?
Atpms
What do atoms make up?
Everything in the universe
How many different types of atoms?
118
How many atoms make up an element?
1 type of atom
What does each element have its own?
It’s own symbol
The first and second letter of chemical symbols are w
Always what?
First is capital second is lower case
What do metals look like and conduct?
Their shiny and conduct energy
What metals don’t conduct electricity?
Non metals
What only 2 non metals conduct electricity
Graphite and carbon
What is a compound?
When the atoms of 2 or more DIFFERENT elements join together
WHat happens when molecules of 2 different elements join together
They form a compound
After what number In the periodic table are all elements man made?
92
What are the only 2 liquid elements?
Mercury and bromine
What are the collums and horizontal rows in the periodic table called?
Collums= groups
Horizontal rows=periods
What do compounds do different from the elements they came from?
They can act different and look different
If compounds end in “ide” what do they contain?
They contain 2 different elements
WHat element is named first in a compound ?
The one further left
What do compounds ending in “ite” or “ate” always contain?
Oxygen and 2 other elements
What compound contains more oxygen, “ite” or “ate”?
Ate!!
What are the 4 signs of a chemical reaction?
Bubbles are formed
Change in temperature
Change in colour
Solid (precipitate) is formed
Are physical changes easy to reverse?
YES!
Are chemical reactions easy to reverse?
No!
What are the 4 main groups in the periodic table?
Alkali metals
Transition metals
Halogens
Noble gasses
