Math in Chemistry
The formula for density
What is density = mass/volume?
The type of mixture that salt water is
What is a homogeneous mixture?
The place where protons are found
What is in the nucleus?
The number of sig figs in the number 0.00736
What is three?
The number of protons in an atom of Br
What is 35?
The amount of matter an object contains
What is mass?
The three basic building blocks of matter
What are atom, element, and compound?
A positively-charged atom
What is a cation?
The number of grams in 70.24 kilograms (kg)
What is 70,240 grams?
The number of electrons in Cl-1
What is 18?
Meter is the unit for this SI measurement
What is length/distance?
The type of change that fermentation is
This scientist is responsible for discovering the neutron
Who is James Chadwick?
This number in scientific notation:
0.0231
What is 2.31 x 10-2 ?
The number of neutrons in Uranium-235
What is 143?
This piece of lab equipment is used to transfer small amounts of liquid
What is a pipette?
The two major categories of matter
What are mixture and pure substance?
An atom that does not have the same mass number (or number of neutrons) as the periodic table
What is an isotope?
The number of sig figs in the number 5000
What is 1?
The number of electrons in Sn+4
The closeness to a correct value
What is accuracy?
The four signs that a chemical change has occurred
What are formation of a precipitate, energy change (increase/decrease in temperature or light production), formation of a gas, and color change?
The experiment that led to JJ Thomson's discovery of the electron
What is the cathode-ray tube experiment?
The answer to the following calculation:
(2.54 x 103) / (8.87 x 10-1)
What is 2,863.58 or 2.863 x 103 ?
The number of neutrons in an atom of Thorium-232
What is 142?