Chemistry Flashcards
How do you calculate the number of neutrons?
atomic number-mass number
What does the mass number tell you?
The total number of protons and neutrons
What is a compound?
2 or more atoms joined together
Reactivity_____ down the row.
increases
Reactivity_____ up the row.
decreases
What is ionic bonding?
It is between a metal and a non-metal.
What is covalent bonding?
Between 2 non-metals.
What are elements?
Atoms with the same atomic number
What are compounds?
When elements react and combine with other atoms to form compounds.
How do ionic bonds form?
positive and negative ions attract and create an ionic bond.
Name 3 covalent substances.
- silica
- diamond
- graphite
What is an alloy?
A metal combined with other elements.
What is an anion?
Negative ion
What is a cation?
Positive ion
What is electrolysis?
Splitting a substance using electricity
What is a cathode?
Negative electrode
What is an anode?
Positive electrode
What is an electrolyte
The substance being broken down
What is the test for hydrogen?
Makes a popping sound when lit
What is the test for oxygen?
Re lights a glowing splint
What is meant by an ionic compound?
Contains positive and negative ions they are overall neutral
