Chemistry Mid Topic Test Flashcards
Define mixture?
2 or more pure substances mixed together
Define pure substance?
A substance that is made up of one type of molecule
Define solution?
When a substance mixes really well, a solution is created
Define Solute?
A substance that dissolves in another
Define Solvent?
A substance that defines a solutions physical form
Define Concentration?
The meaasurement of a dissolved solute
Define Dilute?
A substance that is weak
Define Saturated?
Holding as much moisture as can be absorbed
Define Heterogeneous mixture?
A mixture of different things that you cannot see
Define Homogeneous mixture?
A mixture of same things with parts that you can see
What is the difference between a solvent and a solute?
The solvent is the material that decides the solutions ending form (solid, liquid and gas). The solute is that product that the solvent dissolves in.
What is the solvent in cordial?
water
What is the solute in seawater?
Salt
Name 5 solutions
Sports drink, tea, pancake syrup, soda, bronze
Define Observation
Closely looking at or observing something
Define Inference
A conclusion based on an observation
An educated guess
List 5 pieces of lab equipment
Beaker, Conical Flask, Pipette, Measuring Cylinder, Test tube.
What is a beaker used for?
Heating or cooling a liquid
What is a pipette used for?
Transferring a liquid volume
What is a measuring cylinder used for?
Measuring volumes of a liquid
What is a conical flask used for?
Mixing a liquid
What is a Test tube used for?
Handling chemicals
Name 5 mixtures
Seawater, Cordial, flour and water, sand and water, gasoline
Name 3 rules of lab safety
- Never drink anything.
- Stand back when an experiment is in progress.
- always wear lab safety clothing/gear.
