Structure of Matter
The smallest unit of an element that still has the same properties.
What is an atom?
How much mass is in a given volume of a substance.
What is density?
A property that describes how a substance can change into something new.
What is a chemical property?
Materials that come directly from nature, like cotton or wood.
What are natural materials?
These properties can be observed without changing the substance.
What are physical properties?
Two or more atoms bonded together.
What is a molecule?
The formula for density.
What is D = m ÷ v?
The ability of a substance to burn in the presence of oxygen.
What is flammability?
Man-made materials created through chemical processes.
What are synthetic materials?
These properties describe how a substance reacts or changes into something new.
What are chemical properties?
A substance made of two or more different elements chemically bonded.
What is a compound?
The temperature at which a solid turns to a liquid.
What is the melting point?
The starting materials in a chemical reaction.
What are reactants?
The process of changing natural resources into new, useful materials.
What is a chemical process?
A clue that a chemical reaction has happened, like color change or bubbling
What is evidence of a chemical reaction?
These are large networks of atoms that repeat in patterns, like in crystals.
What are extended structures?
The temperature at which a liquid turns to a gas.
What is the boiling point?
The new substances formed by a chemical reaction.
What are products?
A clear difference between natural and synthetic materials.
What is natural = found in nature; synthetic = made by humans?
All compounds are this, but not all of these are compounds.
What are molecules?
The smallest repeating part of an extended structure.
What is a repeating subunit?
The ability of a substance to dissolve in another substance.
What is solubility?
During a chemical reaction, atoms are not created or destroyed — just this happens.
What is regrouped or rearranged?
A synthetic material made from petroleum and used in bottles and bags.
What is plastic?
This term describes how atoms and molecules are arranged in all matter.
What is the structure of matter?