Chemistry
is the type of change that happens when chemical bonds break and new bonds form (or a new substance)
what is a chemical change?
they are chemicals that act as biological catalysts by speeding up reactions in living things
what are enzymes?
is the type of plate boundary where the sea-floor spreading occurs
what is divergent?
is a group of elements has a full outer shell so does not form compound will other elements
what are the noble gases?
is the element that comprises most of the mass of the sun
what is hydrogen?
is an example of a chemical change
what is burning something? or formation of a gas, a new color, heat is produced, light is produced...
this level of a food chain gets its nutrients from photosynthesis
what is a producer?
these types of elements are shiny, malleable, ductile, and conductors
what are the characteristics of metals?
the ideal number of valence electrons for an atom
what is 8?
is the tide with the least difference between consecutive low and high tides.
what is a neap tide?
this is always a result of a chemical reaction
what is a new substance?
this body system delivers oxygen and removes carbon dioxide and provides nutrients to cells.
what is the circulatory system?
this is a result of unbalanced forces
what is motion?
this element has 22 protons
what is titanium?
the luminosity measurement of the Sun on the HR diagram?
what is one?
the substances listed on the left side of a chemical equation
what are the reactants?
Earth's atmosphere is composed of about 78 percent of this element
what is nitrogen?
this force holds our solar system together and allows the planets to orbit the Sun
what is gravity?
Na2O has how many atoms of Sodium?
what is 2?
They are loose collections of ice , dust , and small rocky particles whose orbits can be very long.
what is a comet?
this laws states that matter is not created nor destroyed
what is the law of conservation of mass?
an organism that is eukaryotic, multicellular, and autotrophic
what is an organism in Kingdom Plantae?
the density of an object with a mass of 10 grams and a volume of 2mL
what is 5 g/mL?
is the name of the compound with the following chemical formula: KF
what is potassium fluoride?
this phase of the lunar cycle will show more than half of the right side of the moon illuminated
what is waxing gibbous?