Phase Changes
Solid to liquid
Melting
Reactivity with water
The starting materials in a chemical reaction
What is Reactant?
A substant that can not be broken down into anything smaller.
Elements
True or False: Elements can be broken down into simpler substances.
False
___ ___ going from a solid to liquid to gas and back.
phase change
A bike rusting after being left out in the rain
Ability to rust
What type of change is butter melting?
Physical Change
Theses will likely be written with a symbol and number.
Compounds
Elements and compounds can be classified into _____ _________
Pure substances
Gas to liquid
Deposition
A material's ability to allow heat to flow is?
Conductivity
When a substance changes into one or more new substances it is?
Chemical change
where could you find all the elements?
A Periodic table
A combination of 2 or more pure substances is?
Mixtures
During condensation (gas to liquid) energy is ___ ___
taken away
The ability of a solid substance to be hammered or shaped without shattering.
Malleability
Burning wood is an example of _____ ______
Chemical change
What is H2O considered as?
A Compound
Examples of compounds are
H2O, and NaCl
What happens to the particles when the substance goes from liquid to gas?
They spread out
Chemical properties can change by ____ with elements or ____ breaking apart.
combining, breaking
The signs of physical change are?
Change in shape, color change(painted), texture change, dissolving, and phase changes
Molecules are made up of ___?____ elements and___?__
Different / Compounds