Examples
Give an example of an SI base unit
kg
In the reaction
2KClO3 >> 2KCl + 3O2
name a product
oxygen
Neutral atoms contain an equal number of ___ and ___.
protons and electrons
What is Avogadro's constant?
6.02 X 1023
What is CH4?
methane
Give an example of a set of measurements that are precise but not accurate.
close together but not close to the right answer
Name one thing that happens during a chemical reaction.
reactants change into products , substances with new chemical and physical properties are formed and the law of conservation of mass applies
Give an example of a transition element
iron
The formula for borax is Na2B4O7·10H2O. How many water molecules are in two moles of borax?
20
HNO3
nitric acid
Give an example of an ion.
ClO-
The formation of a solid product in a chemical reaction can be represented by which two symbols
s or cr
Give an example of an atom is likely to form a +2 ion.
Ba
Compare the mass of one mole of iron to one mole of lead.
iron is lighter than one mole of lead
nickel (II) chloride
NiCl2
Give an example of a molecule.
H2
Name a product resulting from a reaction between silver nitrate and sodium chloride?
silver chloride
Give an idea that used to be part of the atomic theory but is NOT part of it now.
Electrons move around the nucleus as planets orbit the sun.
What coefficient should be placed before carbon monoxide when the following equation is balanced
C + SO2 >> CS2 + CO
4
5C + 2SO2 >> CS2 + 4CO
What am I called?
Erlenmeyer flask
Give an example of a source of error.
measuring the mass of an object
Which particle is required on the right to balance the equation? 94Be + 42He >> 146C + ?
-10e
CuSO4 • 5 H2O
copper (II) sulfate pentahydrate
What is the formula mass of sodium hydroxide?
40 amu
What's the name of the drawer I go in?
glass and ceramics