Phases of Matter

In which state of matter are molecules free to move (sliding past one another), have definite volume, but not a definite shape?

• solid

• liquid

• gas

• plasma

Which of the following is a chemical change?

• ice melting

• iron nail reacting with oxygen to rust

• making a plane out of paper

• chewing an apple

Example of condensation...

• moisture collecting on the outside of a glass

• steam rising off of the ground

• water being placed in an ice tray and placed in the freezer

• a hot air ballon

Tags

NGSS.MS-PS1-4

NGSS.MS-ESS2-4

A difference between physical change and chemical change is that _________________.

• chemical change involves energy while a physical change does not

• different kinds of molecules (something NEW) are present after a physical change but not after a chemical change

• different kinds of molecules (something NEW) are present after a chemical change but not after a physical change

• physical change involves energy while a chemical change does not

Heat can cause ice to change to liquid water by _____________.

• filling the space between the molecules

• causing the molecules to move faster and farther apart

• increasing the distance between electrons within molecules

• increasing the attraction between molecule

Tags

NGSS.MS-PS1-4

The solid, liquid, and gaseous states of water differ from each other in _____________

• the mass of the individual molecules (atoms)

• the size of the individual molecules (atoms)

• the net electrical charge of the individual molecules

• the average speed of movement of the individual molecules (atoms)

Tags

NGSS.MS-PS1-4

What is the density of a penny with a mass of 3.5g and a volume of 0.9 cm^3?

• 3.89 g/cm^3

• 0.26 g/cm^3

• 0.315g/cm^3

Silver is a white metal that is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does not react with water but does react with nitric acid. Silver tarnishes (changes color) when exposed to air (reacts to the oxygen).

A physical property of silver is:

• Silver reacts with nitric acid by producing a gas.

• Silver burns orange when on fire.

• The density of silver is 10.49 g/cm3 .

• Silver tarnishes (changes color) with air.

Silver is a white metal that is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does not react with water but does react with nitric acid. Silver tarnishes (changes color) when exposed to air (reacts to the oxygen).

A chemical property of silver is:

• Silver tarnishes (changes color) with air

• Silver is an excellent conductor of heat

• The density of silver is 10.49 g/cm3

• The melting point of silver is 2,000 degrees Celsius

Based on the following characteristics, classify the state of matter: high energy, found in stars, and consists of freely moving charged particles.

• solid

• liquid

• gas

• plasma