Topic 1 Chemistry For Life Flashcards
Covalent bonds
They share electrons, Not evenly shared, The molecules has a slightly negative charge and a part that is slightly positive.
Inorganic ions
When dissolved in water the ions separate
Nitrate ions
Needed in plants for the amino acids from the product of photosynthesis and also in the formation of DNA
Phosphate ions
Needed in the organism in the formation ATP and ADP as DNA and RNA
Chloride ion
Needed in nerve impulses, sweating and sectory systems
Hydrogen carbonate
Needed for blood to provent it from becoming too acidic
Sodium ion
Needed in nerve impulses, sweating and secretory systems
Calcium ions
Needed in the middle of cells In plant and bone and muscle contraction in animals
Hydrogen ions
Needed in cellular respiration and photosynthesis and system in organs as well as the PH balance
Magnesium ions
Needed for production of chlorophyll in plants
Water is a
Polar solvent
Why is water good for transporting?
The substances dissolve
What temperature does water cool at?
4 degrees
Why does ice float?
Because the ice is more dence than water
Why do the water temperature stay the same all year?
Water has a high heat capacity
Why is surface tension important?
As it holds together like a thin skin
Anion
Is a negative ion
Cation
Is a positive ion
Ionic bonds
Gained or lose electrons
Polar molecules
Containing dipole
Hydrogen atoms
Weak electrostatic bonds between the polar molecules and contain atleast one hydrogen atom
