Upgrade to remove ads
Chem Lab Final
Terms in this set (36)
Hottest part of a flame?
Inner blue cone
What do you always pay attention to when you write measured numbers?
Unit of measurement
5 lab safety rules?
1. Hair tied back 2. No exposed ankles 3. No horseplay in the lab 4. No food or drink 5. Never taste a chemical or smell it directly
How do you make a yellow sooty flame change into a blue, hot flame?
Adjust the air flow to allow more oxygen into the flame. Adjust using the "collar".
Metric Unit: Temperature
Metric Unit: Mass
SI Unit: Temperature
SI Unit: Mass
What is the difference between accuracy and precision?
Accuracy: Actually hitting the target
Precision: Hitting the same spot over and over
What is the difference between a conversion factor and an equality?
An equality compares two units using an equal sign. For example, 1 inch = 2.54 cm. A conversion factor compares two units using a fraction, which makes it solvable. For example 1 inch / 2.54 cm
Is a broken clock with its hands stuck on 2:54 accurate or precise two times each day?
Convert Fahrenheit to celcius
Celsius = (F-32) / 1.8
Convert celcius to fahrenheit
Fahrenheit = 1.8C + 32
What is the property of oil that makes it float on water?
Density. Oil is less dense.
What is specific heat?
Joules / grams x celcius
The amount of energy in joules used to heat 1 gram of substance by 1 degree celcius
Is heat transferred from hot to cold or cold to hot?
Hot to cold
Heat gain formula?
The atomic number = ______
Amount of protons, or the amount of electrons.
The mass number = ________
Amount of neurons plus amount of protons
What is the name of the elements in group 1 on the periodic table?
2 Physical properties of metals
What are isotopes?
Different versions of the same element. Have a different number of neurons and therefore a different mass number; however, they have the same amount of protons and electrons.
What color is neon in a flame test?
Electron configuration of 20Ca?
1s2 2s2 2p6 3s2 3p6 4s2
What is a valence electron?
Electron in the outermost energy level
A metal and a nonmetal make what kind of compound?
Explain the difference between a mixture and a chemical compound?
A mixture is made of physically blended components that can be physically separated back to their original means, while a chemical compound is formed through a chemical change, which changes the identity of the components.
How many valence electrons in calcium and oxygen?
Calcium has 2. Oxygen has 6.
List three signs of a chemical change
1. Formation of bubbles 2. Formation of precipitate 3. Change of color
What is the name of CuCl2?
Copper (II) Chloride
Write a balanced equation for the reaction: Cu + HCl -> CuCl2 + ?
Cu + 2HCl -> CuCl2 + H2
Heat of fusion is another name for...
Write the equation for Boyle's Law?
P1V2 = P2V2
(Pressure and volume)
If you increase pressure, what happens to volume?
How is solubility defined?
Maximum amount of solute that can be dissolved in 100 grams of water.
Name two ions that are in HARD water?
Fe3+ and Mg2+
YOU MIGHT ALSO LIKE...
Chem Exam 1, Chapters 1-4
Chemistry Lab Practical
Chemistry Lab Practical
Fire Science Test 1
OTHER SETS BY THIS CREATOR
Mental Health Meds
Ah2 exam 2 numbers
EXAM 1 Women's based on study guide
Study set that I did not finish for women's health…