Compound
Vinegar is the common name of what substance?
Acetic acid
The atomic symbol of the element Mercury is:
Hg, Mn, Mo, NeHg
What is 9 nanometer in meter?
9x10-9 m
Which part of the rhubarb plant contains the highest concentration of oxalic acid is considered toxic if ingested in large amount?
What is the household chemical of MgSO4
Epsom Salt
Which of the following solvent is the most polar?
Hexane, Dichloromethane (DCM), Ethanol, Water
Water
Which element has the atomic number 80 ?
Mercury
what state of mater is water the densest in?
Solid, Liquid, Gas
Liquid
The American false hellebore contains veratrum alkaloids. What is the primary physiological effect of these alkaloids on the human body?
Vomiting, bradycardia (slow heart rate), and hypotension (low blood pressure)
Epsom salts are an example of a/an ______compound.
Non-polar covalent, Polar covalent, Ionic, Radioactive
Ionic
Which of the following is the chemical formula of glucose?
C12H22O11, CO2, C6H12O6, H2O2
C6H12O6
Which element has 14 protons?
Carbon, Nitrogen, Silicon, Phosphorous
Silicon
Balance the reaction equation CaCl2 + Na3PO4 → Ca3(PO4)2 + NaCl.
3 CaCl2 + 2 Na3PO4 → Ca3(PO4)2 + 6 NaCl
Which type of organism is a Portuguese man O'war?
Siphonophore, Crustacean, Jellyfish, Cartilaginous fish
Siphonophore
why hydrogen peroxide kept in a brown bottle?
brown bottle protect hydrogen peroxide from light and avoid degradation.
Which of the following common compounds contains an ionic bond?
Water, Carbon dioxide, Sodium chloride, MethaneSodium chloride
which element has the strongest electronegativity?
Cl, Cu, Fr, F
F
What type of reaction is this?
2 AgNO3 → 2 Ag + 2 NO2 + O2
Decomposition
what is the most toxic part of Physostigma Venenosum?
Seeds
What two common household chemicals combine to form chloroform gas (HCCl3)?
Bleach and alcohol
what is the molecular weight of water?
O: 16.00 g/mol, H: 1.01 g/mol
water (H2O) = 1.01 g/mol x 2 + 16.00 g/mol =18.02 g/mol
What is the electron configuration of ground state nitrogen?
1s2 2s2 2p3 or 1s2 2s2 2p6
1s2 2s2 2p3
Because of the pH scale is logarithmic, how many time more acidic is a substance with a pH of 2 compared to a substance with a pH of 6?
1, 3, 1000, 10000
10,000 (104 = 10,000)
Lionfish toxin is primarily composed of proteins. Why do we use heat on the the wound if you poke yourself with a venomous lionfish spine?
heating the proteins can denature the protein (i.e. change the shape to render the toxin properties ineffective)
In the Bleach and alcohol reaction, which is the chlorine source and which is the carbon source of chloroform gas (HCCl3)?
chlorine from Bleach and carbon from Alcohol
Bleach + Alcohol --> chloroform
NaClO + C3H8O --> HCCl3