Atoms & Molecules
These three subatomic particles make up an atom.
Protons, neutrons, and electrons
Matter can exist in these three common forms.
Solid, liquid, and gas
The property describing how well a material transmits heat or electricity.
Conductivity
The number of protons in an atom is called this.
Atomic number
A mixture in which particles are scattered throughout and block light is called this.
Colloid
A particle made of two or more atoms joined together is called this.
Molecule
This state of matter has no definite shape and no definite volume.
Gas
Color, odor, and density are examples of these types of properties.
Physical properties
Mendeleev originally arranged elements in order of increasing this.
Atomic mass
This separation method uses substances' different boiling points.
Distillation
This subatomic particle has no electrical charge.
Neutron
In this state, particles spread apart quickly in all directions.
Gas
Hardness, strength, and density are examples of this type of property.
Physical properties
Moving from left to right across the periodic table, elements generally change from these to these.
Metals → metalloids → nonmetals
A solid solution such as sterling silver is called this.
Alloy
A water molecule contains atoms of these two elements.
Hydrogen and oxygen
Ice, liquid water, and water vapor are examples of these three forms of this substance.
Water
The ability to push or pull another object without touching it is called this.
Magnetism
Mendeleev's table is called "periodic" because the properties of elements repeat in these.
Cycles
The separation of sand and water cannot be accomplished using a magnet because this is not a magnetic mixture.
Magnetism does not attract sand/water
The center of an atom, containing protons and neutrons, is called this.
Nucleus
When heat is added to a liquid, its particles generally do this.
Speed up/move faster
This type of element is most likely to conduct heat and electricity.
Metal
An element cannot be broken down into anything simpler by this process.
Chemical reactions
Mixing food coloring with water is an example of this type of change.
Physical change