periodic table of elements
who made the periodic table?
Dmitri mendeleev
what are the 3 phases of matter
solids liquids and gases
what is a phase change?
when a phase of matter changes to a different one
what are organelles?
small structure in a cell that operate like organs
What geologic time are we in currently?
cenozoic
whats the first element on the periodic table?
Hydrogen
what are bonds that get hold tightly called?
solids
what is it called when a liquid turns into gas?
evaporation
what is the cell powerhouse?
mitocondria
what is a fossil?
preserved remains
what element is Au?
Gold
what phase of matter has no definate volume?
gases
what happens when deposition occurs?
going from gases to solid
what is the function of the nucleus?
to store DNA
what is mainly used to find the age of a fossils?
carbon dating
what part of a atom is positively charged?
protons
why does air feel hard when you push on the plunger of a closed syringe?
because the air particles move very fast and push back with force.
what is sublimation?
going from a solid to a gas skips liquid phase
what is the difference of the animal and plant cell?
plants have a cell wall and chloroplast?
what are people who study fossils called?
Palentologist
what are the 3 main parts of an atom particle?
protons, neutrons, and electrons
what phase of matter can be compressed the most?
gas
what cause condensation?
cooling and losing molecule energy
why is the golgi complex call the post office of the cell?
because molecules enter one side and get packaged by stacked membranes into vesicles and sent to other parts of the cell.
why is the fossils record incomplete?
most of the organisms dont fossilze after they die