Atomic Theory Review

Everything is made of....

100

Everything that is not energy is made up of?

Atoms

200

What are the parts of an atom?

Proton, Electron, Neutron

300

How many atoms are in a molecule?

2 or more

400

What are the three states of matter?

Solid, Liquid, Gas

500

A molecule of oxygen we breath is made up of how many atoms?

2 Oxygen atoms

Denisty

100

What is the formula for density?

Density=Mass/Volume      

or

D=M/V

200

What are both units for density?

g/cm³ 

and

g/mL

300

If an object has a density of 10.0 g/mL and is cut in half what is the density of both half's of the object?

10.0g/mL, density does not change

400

Calculate density:

Mass = 10.0 g

Volume = 2.0 mL

5.0 g/mL

500

What is the density of liquid water?

1.0 g/cm³

Lab Safety

100

What do googles help protect?

Your eyes

200

Why would you want to tie back any long hair or loose clothing while in a lab?

So you don't light anything on fire. 

300

Know you instruments: What is the difference between a graduated cylinder and a beaker?

A beaker has a large opening and measures large amounts of liquids. 

and/or

A graduated cylinder is a cylinder that measures smaller amounts of liquids, you measure the level of the liquid at the meniscus. 

400

Mr. Frost thought it would be cool to have a science themed party for his crew. He figures what could be better than using actual lab equipment to drink and eat out of. What is a possible risk when eating/drinking out of lab equipment?

The equipment could have been dirty or contaminated with chemicals from a previous lab. 

and/or

Chemicals that should not enter the human body could be consumed. 

(Mr. Frost would never do this)

500

Pick all of the following that show correct lab behavior.....

Hair tied up           Smelling directly from a test tube

Not wearing safety googles          Wearing an apron 

Eating cereal out of a beaker         

Washing hands at the sink after spills/clean ups

Hair tied up

washing hands at the sink

Wearing an apron

Volume

100

What is the definition of volume?

The amount of space an object takes up.

200

Units for volume are......

cm³ - cubic centimeters

or

mL - milliliters 

300

What 2 tools can be used to calculate volume?

Ruler

and

Graduated Cylinder 

400

1.0 cm³ equals how many mL's?

1.0 mL

500

Calculate the volume

Density = 25.0 g/mL

Mass = 200.0 g

Vol = M/D

Vol = 200.0 g / 25.0 g/cm³ 

Vol = 8.0 mL

Mass

100

What is the definition of mass?

The amount of matter in an object. 

200

Units for mass are.....

g - grams

or

Kg - kilograms

(There are other units) 

300

What tool is used in lab to measure mass?

Triple beam balance

400

Calculate the mass of the object using its volume and density.

Vol = 30.0 mL

Density = 55.6 g/mL

Mass = Vol x Density

Mass = 30.0 mL x 55.6 g/mL

Mass = 1,668 g

500

As gravity increases your mass doesnt change but your what will?

Your weight.