Matter & Changes
Baking a cake is this type of change.
What is chemical?
The number 3.050 has this many sig figs.
What is four?
The base measurement for length is this in SI units.
What are meters?
The two subatomic particles that factor into an atom's mass number.
What are protons and neutrons?
The element that has an atomic number of 10.
What is Neon?
Boiling water is this type of change.
What is physical change?
The number 4.00 x 105 has this many sig figs.
What is three?
The density of a substance that has a volume of 5 cm3 and a mass of 10 g.
What is 2 g/cm3?
The subatomic particle that determines the identity of an element.
What is the proton?
An has two naturally occurring isotopes, X-45 and X-46, and an average atomic mass of 45.65 amu. This is the most abundant naturally occurring isotope for this element.
What is X-46?
Three clues that a chemical change has occurred.
What are: color change, formation of a solid/precipitate, formation of a gas/bubbles, heat change?
The rule of significant figures when adding and subtracting says you must round based on this.
The larger measurement between 50,000 nm and 0.000005 meters.
What is 50,000 nm?
The scientist who posited that all things were made of atoms and that all atoms of the same type of element were identical.
Who is Dalton?
Give the "longhand notation" (aka name-mass) for an atom that has 47 protons and 61 neutrons.
What is Silver-108?
What are elements and compounds?
34.896 rounded to four sig figs.
What is 34.90?
The number of centimeters in 1.5 feet.
What is 45.72 (or 46)?
The location in the atom where electrons are found.
What is on the outside and/or electron cloud?
The average atomic mass for an element with three naturally-occurring isotopes: X-11 (20%), X-12 (50%), X-13 (30%).
What is 12.1 amu?
All mixtures do not have this quality that pure substances have.
What is chemical formula? OR What is uniform composition?
4000 written with two significant figures.
What is 4.0 x 103?
The reason this value is incorrect scientific notation: 0.567 x 104.
The scientist who did the Gold Foil Experiment and developed the theory of the atomic nucleus.
Who is (Ernest) Rutherford?
What is: different mass, similar chemical reactivity?