Vocab
Anything that has mass and takes up space
Matter
Smallest particle of an element
Atom
A sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Pure Substance
A liquid's resistance to flowing
Viscosity
What is sublimation?
A phase change from a solid to a gas
A pure substance made of only one kind of atom
Element
A substance made up of atoms of two or more different elements joined by chemical bonds
Compound
A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture
heterogeneous mixture
This is a measure of the ability of a mineral to resist scratching
Hardness
What is the density of this substance -
mass = 10g
length = 5 cm
volume = 2 cm3
density = mass/volume
density = 10g/2cm3
density = 5g/cm3
A neutral group of atoms joined together by covalent bonds
Molecule
A combination of two or more substances that are not chemically combined
Mixture
a mixture in which two or more substances are evenly mixed but not bonded together
homegeneous mixture
The physical property of metals that are capable of being bent, extended or shaped through force, such as pressure and beating with a hammer or roller
Malleablity
Why does copper change color when left outside?
It goes through a chemical change when the copper reacts with oxygen
The process by which molecules move from an area of higher concentration to an area of lower concentration
Diffusion
The energy an object has due to its motion
kinetic energy
A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.
metal
Name 3 physical properties
appearance
odor
conductivity
density
hardness
malleability
viscosity
melting and boiling points
A substance has a density of 5 g/cm3. will it float on water?
No -
Since the density of water is 1g/cm3, anything with a greater density will sink. Anything with a lower density will float.
What are the differences in definitions for:
Solid
Liquid
Gas
Solid - A form of matter that has a definite shape and volume
Liquid - A state of matter that has no definite shape but has a definite volume.
Gas - A state of matter with no definite shape or volume
What are:
solution
solvent
solute
solution: A homogeneous mixture of two or more substances
solvent: In a solution, the substance in which the solute dissolves.
solute: A substance that is dissolved in a solution.
This is an insoluble solid that emerges from a liquid solution
Precipitate
Name 2 chemical properties
flammability
reactivity
As demonstrated in experiment 2.1, what theory states that all particles of matter are in constant motion, that particles move with greater energy as they become warmer, and that particles move with less energy as they become cooler?
kinetic theory