Measurements and Calculations
Write 238,000 in scientific notation
What is 2.38 x 105
The three states of matter
What is gas, liquid, solid
The symbol for the element Hydrogen
The name for NaCl
What is sodium chloride
Balance: H2 + O2 -> H2O
What is 2H2 + O2 -> 2H2O
Calculate with the correct number of significant figures
5.19 + 1.9 + .0842 =
What is 7.2
This property refers to its ability to form new substances
What is chemical
The three subatomic particles
What are protons, electrons, and neutrons
The name for Fe2O3
What is Iron (III) oxide
Type of reaction in which two or more reactants react together to form an insoluble solid
What is precipitation
Calculate with the correct number of significant figures
3.21 x .3556 x 1.2789 =
What is 1.46
A substance that cannot be broken down into other substances by chemical methods
Atoms with the same number of protons but different number of neutrons
What is isotope
The name for NO2
What is nitrogen dioxide
A reaction that involves a transfer of electrons
What is oxidation-reduction
How many significant figures are in following calculation:
8 eggs
What is infinite
What change occurs if iron metal is melted
What is physical
A distinct substance that is composed of two or more elements and always contains the same relative numbers of atoms of each element
What is compound
Formula for sodium sulfate
What is Na2SO4
A reaction when a given compound is formed from simpler materials
What is synthesis
Convert 26.2 mi to km
1 mi = 1760 yd
1m = 1.094 yd
What is 4.21 x 104
The process used to seperate solid particles from a liquid or gas by passing the mixture through a filter medium
What is filtration
A charged entity produced by taking a neutral atom and adding or removing one or more electrons
What is ion
Formula for nitric acid
HNO3
Classify the reaction:
K2CrO4 (aq)+Ba(NO3)2 (aq) -> BaCrO4 (s) + 2KNO3 (aq)
What is precipiation and double displacement