Chemistry Cards

HideShow resource information
Fill in the missing words: When two oxygen atoms bond, the atoms ________ electrons. The oxygen atoms are joined by ________ bonding.
Share; covalent.
1 of 11
Fill in the missing word(s): The particles lost when a gold atom becomes a gold ion are called ....................................................... .
Electrons.
2 of 11
How does a catalyst help a reaction?
A catalyst changes rate of reaction or speeds up reaction.
3 of 11
Fill in the missing word(s): When heated, a thermosoftening polymer will _______.
Melt.
4 of 11
What does the symbol ⇌ mean?
Reversible.
5 of 11
Graphite is used in pencils. Explain why.
Layers can slide / slip because there are no bonds between layers.
6 of 11
Give two advantages of gas chromatography compared with paper chromatography.
Any two from:  It is rapid / quick  accurate  sensitive or detects very small quantities.
7 of 11
Fill in the missing word(s): Oxygen atoms with different numbers of neutrons are called ________.
Isotopes.
8 of 11
Fill in the missing word(s): The bonds in a water molecule are formed by _______ electrons.
Sharing.
9 of 11
What is the ionic equation for the neutralisation reaction?
H+ + OH– → H2O
10 of 11
The formula of sodium chloride is NaCl. Calculate the relative formula mass of sodium chloride. Relative atomic masses: Na = 23; Cl = 35.5
Relative formula mass = 58.5 (23 + 35.5).
11 of 11

Other cards in this set

Card 2

Front

Fill in the missing word(s): The particles lost when a gold atom becomes a gold ion are called ....................................................... .

Back

Electrons.

Card 3

Front

How does a catalyst help a reaction?

Back

Preview of the front of card 3

Card 4

Front

Fill in the missing word(s): When heated, a thermosoftening polymer will _______.

Back

Preview of the front of card 4

Card 5

Front

What does the symbol ⇌ mean?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Structure and bonding resources »