Isotopes and Atomic Mass
What is an atomic number?
The number of protons
What is an atom?
The smallest particle of an element that retains the properties of the element
What is filtration?
Technique that uses a porous barrier to seperate a solid from a liquid
What is pure substance?
Biology
Study of living things
What is the periodic table built on?
Atomic number
What is the law of conservation of mass?
During a chemical reaction, the mass of reactants = mass of products
What is distillation?
A technique that's based on differences in the boiling points of the substances involved.
What is a physical property?
A characteristic of a substance that can be observed or measured without changing the substance
Earth Science
Study of Earth and rocks that make it up
How do you find the mass number?
Add the protons and neutrons together
What is the law of definite proportions?
A compound always contains the same proportion by mass
What is crystallization?
A technique that results in the formation of pure solid particles of a substance from a solution containing the dissolved substance?
What is matter?
Anything that has mass and takes up space
Physics
Study of motion and forces
How do you find the number of neutrons?
Subtract mass and atomic
What is the law of multiple proportions?
The same two elements can be in multiple compounds, but they have to combine in different ratios, which are simple whole numbers.
What is chromatography?
A technique that separates the components of a mixture on the basis of the tendency of each to travel or be drawn across the surface of another material.
What is mass?
Amount of matter in an object
What is macroscopic?
Seen, touched, measured directly
What are isotopes?
Same atomic number with different neutrons
Who was John Dalton?
An English chemist and teacher who made huge discoveries about atoms
What is a chemical property?
It describes the ability of a substance to undergo a specific chemical change
What is volume?
A space that is occupied by an object
What is microscopic?