Unit 1
The variable that is kept the same amongst trials in order to ensure reliability of the data
What is a Constant?
The model JJ Thompson proposed
The plum pudding model
The scientific notation of 0.000000000078
7.8x10-11
The reason atoms form bonds
What is Stability?
The variable on the X-axis of a graph
The Independent Variable
the degree to which the experimental result agrees with the accepted value.
What is accuracy?
The element located in period 2, nonmetal, and has 6 valence electrons
What is Oxgen?
Comprises most of the atom's volume
What is the electron cloud?
Bond that has low melting point, does not conduct electricity in solution and can appear as a three states of matter.
What is Covalent?
A student measures a sample as 9.85 mL. The accepted value is 10.25 mL. What is the percent error?
The percent error is 3.90%
Convert 0.859 kg to cg
85,900 cg
Accounts for the fact that some isotopes occur more frequently
Weighted average
The tendency of atoms to prefer to have full valence electron shells
Octet Rule
How many Electrons are shared in one molecule of water?
4 electrons
If two metals emit a violet and a red visible light respectively during a flame test, which metal had the greatest change in energy?
Violet
How many digits of estimation are there when reading a ruler to the tenth's place?
What is one digit?
The number of these determines the charge and bonding behavior of an atom
What is Electrons?
Atom with the electron configuration that ends in 5p4
What is Iodine?
The name of the structure that Ionic compounds form.
Given the mass if Iridium is 44.8g and the volume is 2.0 cm3, what is the density?
What is 22.4 g/mL?
Callie measures her flower to be 31 cm tall. Jay measures the plant to be 45 cm tall. Liam measures the plant to be 35 cm tall. Find the average of their measurements of the plant’s height.
What is 37 cm?
What is the weighted average atomic mass of Chlorine if Cl has two isotopes Cl35 and 37Cl. Cl35 has a 75.77% abundance.
35.4846 amu
Noble gas notation for Lead.
Number of lone pairs in CO2
What is 4?
Explain why there was the need to run the trial of melting the salt and sugar before melting the wax?
The first trial allowed us to identify that covalent compounds have low melting points. The wax was an unknown compound.