Atom and Eve
T/F:
Forces between particles increase as the particles move faster and farther apart.
False
The molecules in water are farther apart than the molecules in ice. Therefore, the molecules in water have more ______ energy than the molecules in ice.
potential
Which state of matter has no definite shape, but they do have a definite volume?
liquid
The process of changing a liquid to a solid is called ____.
A group of chemical symbols and numbers that represent elements and the number of atoms of each element that make up the compound.
chemical formula
Particle motion in ice is _______than particle motion in water.
slower
The energy an object has due to its motion.
kinetic energy
Which state of matter has a definite shape and definite volume?
solid
Vaporization occurs when a _______ changes into a ____.
Blank 1: liquid
Blank 2: gas
T/F : In a chemical formula, the number of each type of atom in the compound is shown with numbers.
True
Two atoms of the same substance, bonded together, are known as a _______.
molecule
_____ is the measure of the average kinetic energy of a substance.
Temperature
In which state of matter there are very weak attractions between particles?
gas
This change in phase occurs when a gas changes into a liquid.
condensation
A substance that is form when atoms of different elements combine is known as a ___.
compound
A substance made of only one type of atom is known as a(n) _____.
element
The sum of the potential energy and the kinetic energy of an object is its
thermal energy
The forces of attraction between the particles of a matter sample are strong and draw particles together, keeping them in their place. This is an example _____.
of the solid state of matter
When a liquid boils, its particles get ____. This may be due to the ____ in pressure.
further apart; decrease
Ethanol has six hydrogen atoms, two carbon atoms, and one oxygen atom. Which is the correct chemical formula?
C2H6O
What two changes are likely to happen to the particles inside a beaker with liquid water as thermal energy is removed?
Get closer together and slow down
The measure of the average kinetic energy of the particles in a material is _______, while the result of the motion of all the particles, and the distance and attractions between those particles in the system is _________energy.
Blank 1: temperature
Blank 2: thermal
In a gas, which quantities relate in such a way that when one increases, the other one decreases?
A. volume, pressure
B.temperature, pressure
C.temperature, volume
D. number of particles, pressure
A. Volume, pressure
A change in the state of matter occurs if enough _____ is added or removed from an object.
thermal energy
Aspartame is an artificial sweetener; its formula is C13H16N2O5. What element in the formula has the most number of atoms?
A. Carbon
B.Hydrogen
C. Nitrogen
D. Oxygen
B.Hydrogen