Properties of Matter
What is Matter?
Anything that has mass and takes up space.
When do you wear safety goggles?
Anytime chemicals,heat,or glassware are used.
What is the scientific method?
A way of problem solving by making a hypothesis and testing it.
What are mixtures made up of?
At least 2 types of particles.
What is % error?
A comparison between experimental value and the actual value.
What are physical properties?
No change of matters identity.
What do you do if you don’t understand how to use a piece of equipmen?
Ask the teacher for help.
What is a hypothesis?
An educated guess.
How can a mixture be separated?
By physical means.
What is the formula for percent error?
% error = |Exp v- Actual v|\actual value x 100
What are chemical properties?
Entirely new substance with different properties.
What is not tolerated in the lab?
Horseplaying
What are the two types of variables in an experiment?
Independent and dependent.
What are the two types of mixture?
Heterogeneous and Homogeneous
What does % error compare?
New and old value.
What are the four forms of matter?
Solid, liquid, gas, or plasma.
What do you do if chemicals get in your eye?
Immediately go to eyewash station and flush eyes for at least 15 minutes.
How do you prove your hypothesis is correct?
Carry out the experiment.
What is the difference between solute and solvent?
Solute is dissolved solvent dissolves other substance.
Can the percent error be negative?
No
What happens when you combine lemon juice,water,and sugar?
Each substance retains its properties.
What are poisonous substances and chemical labeled with?
Skull and crossbones symbol.
What are the steps of the scientific method?
Problem,hypothesis, procedure , data and results , conclusion.
What are the differences between heterogeneous and homogeneous mixtures?
All components in a heterogeneous mixture are visible all components in a homogeneous mixture are mixed.
How do you calculate percent error?
The experimental value and actual value divided by the actual value multiplied by 100.