chemitsry
No description yet. This curated deck is ready for daily study.
Card preview (24)
Who created the Periodic Table of Elements?
Dmitri Mendeleev
What are Pure Substances?
• Pure Substances are substances that only have one kind of particle. • most pure substances have to be extracted by humans
What is sugar, and where is it found?
SUgar is an example of a pure substance, and it is derived from Sugar Beets and Sugarcane.
What is Aluminum/Aluminium?
Aluminum/Aluminium is derived from Bauxite
What are Mixtures?
Mixtures are mixes of 2 or more Pure Substances. Mixtures may include gases, solids or liquids
What is an example of a mixture?
Soft Drinks !! its components are: - water - carbon dioxide - sugar
What are Heterogeneous Mixtures?
• They contain materials that can be seen and felt • Heterogeneous Mixtures are also called Mechanical Mixtures i.e. Granola Bars - The different textures can bee seen and felt in the bar.
What are Homogeneous Mixtures?
Homogeneous Mixtures are mixtures of multiple materials that look and feel like one texture/substance i.e. Steel - it’s composed of Iron and Carbon
Jello’s main ingredients?
• water & gelatin the mixture needs to be mixed then cooled
What are Solutions?
They are one substance mixed into another.
What is a Solvent?
the Solvent is the component that is being mixed into, and is normally the majority of the solution.
What are the Solute and Solvent of Air?
Solvent: Nitrogen (78%) Solute: Oxygen (21%) and other gasses (1%)
What is a Solute?
The solute is the component being mixed into the solvent solute particles move between the solvent particles
How do Solvent and Solute particles fit into place?
Entropy
What are DIlute solutions?
A dilute solution: has a low concentration of solutes
What are Concentrate Solutions?
A concentrate solution is a solution with a high concentration of solutes
What is an Unsaturated Solution?
an unsaturated solution has more space between solvent and solute particles
What is a Saturated Solution?
a saturated solution will have little to no space between solvent and solute particles
What is a Supersaturated Solution?
A supersaturated solution will have too many solute particles to fit between the solvent particles heat allows the solute particles to fit in between solvent particles
What is the Mohs scale?
The Mohs scale, developed by Friedrich Mohs, rates the hardness of materials based on their ability to scratch other materials.
What is Malleability?
The ability to be beat into different into different shapes.
What is Durability?
Durability is the ability to be stretched without breaking (i.e. wires)
What is an Alloy?
An alloy is a mixture of 2+ metals that form a homogenous mixture. :)
What do Alloys do?
Alloys help make a metal become stronger by fitting solute metal particles between solvent metal particles. They also allow strong metals to become rust resistant.