Midterm Review

Experimental Design

100

This piece of glassware is the most precise for measuring liquids.

Buret

200

This piece of safety equipment is used to put out a person on fire, rather than a chemical fire

Fire blanket

300

When dealing with chemical reactions that produce dangerous fumes, these experiments are usually held in what safety device?

The Fume Hood

400

In order to determine how much error is in our measurement, we must use our measured and our known to determine this value

The percent error

500

The formula for percent error

Measured - known/known x 100 

Atomic Structure

100

These 3 particles make up the atom

Protons, neutrons, and electrons

200

These two particles make up the nucleus, holding both a positive and neutral charge. 

Protons + Neutrons

300

This term is used for atoms of the same element but they have different masses due to a difference in neutrons.

Isotopes

400

This scientist developed the modern atomic theory we know today, producing 5 postulates and only getting two of them wrong

John Dalton

500

Determine the average atomic mass for Hydrogen-1 with an abundance of 98%, hydrogen-2 at 1%, and hydrogen-3 at 1%. (Extended time question: 30 seconds)

1.03

KMT

100

This temperature scale is used by all scientists and ranges from 0 and up.

Kelvin

200

This is the conversion from Celsius to Kelvin

Celsius + 273

300

This phase of matter has the highest kinetic energy 

gas

400

The average vibration of the particles in a area

Temperature

500

How many moles of H₂ gas is there if a container holds 43.8 L of H₂ gas? (Extended time question)

1.96 moles

Electron Behavior

100

This model is used to help represent the energy levels present in an atom. Also used to help explain how electrons transfer from energy level to energy level

The Bohr Model

200

These are known as the fingerprint of an element and can be used to identify specific elements in a mixture.

Emission spectra

300

The electron configuration of Mg

1s²2s²2p⁶3s²

400

This equation is used to calculate either wavelength or frequency, using the constant c (the speed of light)

Speed of light = (wavelength)x(Frequency)

500

This equation helps calculate energy by using frequency and plank's constant. 

Energy = (Plank's Constant) x (Frequency)

Density and measurement

100

The formula for density

density = mass/volume

200

The number of meters in one kilometer

1000

300

What is the density of a metal with a mass of 35g and a volume of 2cm³

17.5 g/cm³

400

We have three liquids A, B, and C. Liquid A has a density of 15g/mL, Liquid B has 5g/mL, and Liquid C has 10 g/mL. This is the order in which they would stack on top of each other. (Bottom to top)

A, C, B

500

This is the name of the line in which we measure liquid in a piece of glassware.

Meniscus