Drop the Base
Ask me about Acids
Formula One
Gases
Out of your Element
100
True or false? Bases change litmus paper to blue.
True
100
Give one Property of an Acid.
All acids have a pH of less than 7 (see pH) and all acids make hydrogen ions in water. All acids will make litmus paper turn from blue to red and universal indicator will turn red, orange or yellow. *not limited to these answers*
100
Write the formula for Water
H20
100
What is the definition of a gas?
A gas is a state of matter consisting of particles that have neither a defined volume nor defined shape
100
What is the element X represented by the symbol 91 40 X
Zirconium
200
True or false? Base solutions have a pH below 7.
False
200
What language does the word "acid" come from?
Latin
200
Write the formula for ammonium
NH4
200
What does the abbreviation "STP" mean?
STP in chemistry is the abbreviation for Standard Temperature and Pressure. STP most commonly is used when performing calculations on gases, such as gas density. The standard temperature is 273 K (0° Celsius) and the standard pressure is 1 atm pressure. At STP, one mole of gas occupies 22.4 L of volume (molar volume).
200
How many protons and neutrons are in 35Cl?
17 protons, 18 neutrons
300
What are the properties of basic solutions?
Basic solutions have OH1- concentrations that are greater than the H3O1+ concentration. Basic solutions have a pH greater than 7. Base solutions will turn the color of red litmus paper to blue.
300
State the Arrhenius definition for acids
An acid is a substance that releases a proton, H1+, to water molecules when it dissolves in water. This process forms a hydronium ion, H3O1+
300
What is the chemical formula for ethanol?
C2H6O
300
A balloon contains 4 moles of an ideal gas with a volume of 5.0 L. If an additional 8 moles of the gas is added at constant pressure and temperature, what will be the final volume of the balloon?
15 L
300
What is the element X represented by the symbol 51 23X
Vanadium
400
Name a strong base.
Examples but not limited to LiOH - lithium hydroxide NaOH - sodium hydroxide KOH - potassium hydroxide RbOH - rubidium hydroxide CsOH - cesium hydroxide *Ca(OH)2 - calcium hydroxide *Sr(OH)2 - strontium hydroxide *Ba(OH)2 - barium hydroxide
400
What are strong and weak acids? Give one example of each
A strong acid is one, which is almost completely dissociated in solution. (Examples include but not limited to; Dilute nitric acid, dilute sulphuric acid and dilute hydrochloric acid.) A weak acid is one, which is only partially ionized in solution (degree of dissociation is >30%). (Examples include but not limited to; Acetic acid, carbonic acid and sulphurous acid.)
400
What is the chemical formula for acetic acid?
C2H4O2
400
Under what conditions do real gases behave ideally?
Since molar volume V/n = RT/P, decreasing the pressure and/or increasing the temperature will cause the molecules to move farther apart on average. That should cause the gas to behave more ideall
400
Which of the following elements is not an example of a halogen? selenium iodine fluorine chlorine
Selenium
500
Given the balanced equation representing a reaction: H2SO4(aq) + 2KOH(aq) → K2SO4(aq) + 2H2O(l) Which type of reaction is represented by this equation?
Neutralization
500
Name an Arrhenius acid.
H2SO4
500
What is the chemical formula for sodium carbonate?
Na2CO3
500
A 0.614 mole sample of ideal gas at 12 °C occupies a volume of 4.3 L. What is the pressure of the gas?
3.3 atm
500
How many protons, neutrons and electrons are in 122Sb^(2+)
51 protons, 71 neutrons, 49 electrons