Question | Answer |
Evaporation is the process that converts water vapor to liquid water t or f? | false |
The opposite of evaporation is constipation t or f? | false |
Mass is a measure of an amount of matter t or f? | true |
Atomic masses are measured in AMB (atomic mass bundles)t or f? | false |
Grams are a measure of liquid volume t or f? | false |
All liquids freeze at the same temperature t or f? | false |
One milliliter (ml) is the same as one cubic centimeter (cm3 )t or f? | true |
Aluminum is more dense than iron t or f? | false |
atom is what? | smallest stable form of matter, all matter is made up of them |
proton is what? | particle in an atom carrying a positive electric charge |
electron is what? | particle in an atom carrying a negative electric charge |
element is what? | a pure substance consisting of only one kind of atom |
molecule are what? | pure substance combining two or more bound atoms |
compound is what? | a pure substance combining two or more atoms of different kinds |
solid is what? | tight molecules, little motion, strong attractions among molecules |
liquid are close what? | molecules, fluid motion, neither strong nor weak attractions |
gas is what | distant molecules, free motion, little attraction among molecules |
semi-solid is neither what? | as stiff as a solid nor as fluid as a liquid |
The value, 6.02 × 1023, is what? | Avogadro’s number and also the number of atoms of any element in one gram-atomic-mass of that element |
The density of any substance is correctly calculated as what? | mass/volume |
The usual units of density are what? | g/ml or g/cm3 |
Archimedes principle states what? | That a floating object displaces its mass in liquid a sinking object displaces its volume in liquid |
What is the normal boiling point of water in ºC? | 100 |
What is the normal boiling point of water in ºF? | 212 |
What is the freezing point of water in ºC? | 0 |
What is the freezing point of water in ºF? | 32 |
Hot gas that results from boiling water is called what? | steam |
Changes of a substance from solid to liquid,liquid to gas or any of the changes in reverse are called changes of what? | phase |