Properties of Matter
Lab Safety
Scientific Method
Mixtures
Percent Error
100

What is Matter?

Anything that has mass and takes up space.

100

When do you wear safety goggles?

Anytime chemicals,heat,or glassware are used.

100

What is the scientific method?

A way of problem solving by making a hypothesis and testing it.

100

What are mixtures made up of?

At least 2 types of particles.

100

What is % error?

A comparison between experimental value and the actual value.

200

What are physical properties?

No change of matters identity.

200

What do you do if you don’t understand how to use a piece of equipmen?

Ask the teacher for help.

200

What is a hypothesis?

An educated guess.

200

How can a mixture be separated?

By physical means.

200

What is the formula for percent error?

% error = |Exp v- Actual v|\actual value  x 100

300

What are chemical properties?

Entirely new substance with different properties.

300

What is not tolerated in the lab?

Horseplaying

300

What are the two types of variables in an experiment?

Independent and dependent.

300

What are the two types of mixture?

Heterogeneous and Homogeneous 

300

What does % error compare?

New and old value.

400

What are the four forms of matter?

Solid, liquid, gas, or plasma.

400

What do you do if chemicals get in your eye?

Immediately go to eyewash station and flush eyes for at least 15 minutes.

400

How do you prove your hypothesis is correct?

Carry out the experiment.

400

What is the difference between solute and solvent?

Solute is dissolved solvent dissolves other substance.

400

Can the percent error be negative?

No

500

What happens when you combine lemon juice,water,and sugar?

Each substance retains its properties.

500

What are poisonous substances and chemical labeled with?

Skull and crossbones symbol.

500

What are the steps of the scientific method?

Problem,hypothesis, procedure , data and results , conclusion.

500

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.

500

How do you calculate percent error?

The experimental value and actual value divided by the actual value multiplied by 100.

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