Classification Sates of Matter

What changes are likely to happen to the particles inside a beaker with liquid water as thermal energy is removed?

1. Get closer together 2. Slow down

Juana is creating a lab simulation about the movement of the particles in a nonmetal gas. The user can change the pressure in the gas' temperature and see the effect of the change in the gas' volume. What changes should Juana program to cause the decrease in the gas' volume?

1. Increase in pressure 2.Decrease in temperature

Vaporization occurs when a _________ changes into a ________.

1. Liquid 2. Gas

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.

1. Temperature 2. Thermal

Ethanol has six hydrogen atoms, two carbon atoms, and one oxygen atom. Which is the correct chemical formula of the model below?

C2H6O

A change in the state of matter occurs if enough _____ is added or removed from an objec

Force

When a liquid boils, its particles get ____. This may be due to the ____ in pressure.

Further apart; decrease

In which state of matter there are very weak attractions between particles?

Gas

In general, nonmetals are ____ since they are composed of individual atoms or small molecules.

Gases at room temperature

In general, metals are ____ since they are composed of individual atoms or small molecules.

Good conductors of heat

Aspartame is an artificial sweetener; its formula is C13H16N2O5. What element in the formula has the most number of atoms?

Hydrogen

The table shows three models that represent a different molecule each. Information on each molecule is given in the table. 312_module_test_15.jpg Match each element to the atom model used to represent it.

Hydrogen- white sphere Nitrogen- striped sphere Carbon- gray sphere Oxygen- dotted sphere

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 ____________.

Of the solid state of matter

In a chemical formula, the number of each type of atom in the compound is shown with numbers that are _______.

Subscripts

Jocelyn used a balloon to make a model of gas particles. She measured the balloon's diameter at room temperature. Then, she placed the balloon in a freezer. An hour later, she removed the balloon from the freezer and measured the diameter immediately after. Jocelyn made these drawings to show the balloon's diameter at room temperature and immediately after removing it from the freezer. The dotted line represents the size of the balloon before placing it in the freezer.Then, Jocelyn placed the balloon in a tub of heated water that is warmer than the room temperature. Which is the best prediction of what may happen?

The balloon expands to diameter over 10 cm because the gas particles move faster

The sum of all the potential energy and kinetic energy of an object equals its _______.

Thermal energy

In a gas, which quantities relate in such a way that when one increases, the other one decreases?

Volume, pressure