Density of gases

If pressure is constant and the temperature of a gas increases, the volume will ________________ and the density _________________.

• decrease, increase

• increase , decrease

• increase, increase

• decrease, decrease

Tags

NGSS.MS-PS1-4

Pressure is caused by ______.

• gravity.
• gas molecules colliding with each other.
• gas molecules colliding with surfaces of the container.
• gas molecules reacting with each other.

Tags

NGSS.MS-PS1-4

What is true of molecules of gas that are exposed to heat in a fixed volume container?

• They move faster and they cause the pressure to increase

• They move slower and pressure will decrease

• The volume increases and pressure increases

• The volume decreases and the pressure decreases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which container will have lower pressure and why?

• left, it has higher volume and lower density

• right, it has higher density and lower volume

• they both have the same pressure

If more gas is pumped into a closed container the density of the gas will _________ and the pressure will ______________.

• increase, increase

• decrease, increase

• decrease, decrease

• increase, decrease

If the temperature is kept constant and the volume is decreased, the density ___________ and the pressure __________

• decrease, decrease

• increase, decrease

• decrease, increases

• increases , increases

Tags

NGSS.MS-PS1-4

If the pressure in a balloon remains constant what happens to the balloon's volume as the temperature of the air increases?

• the balloon shrivels up
• balloon expands
• balloon stays the same size
• balloon shrinks

Tags

NGSS.MS-PS1-4

If container A is 10L and is under 5 atm of pressure and container B is 10L, but under 7 atm of pressure, what is true about the number of particles inside the containers?

• can not tell from the information
• they contain the same number of particles
• container A has less particles
• container B has less particles

Look at the image . When the volume of air inside the syringe is decreased what happened to pressure?

• pressure increased due to increased kinetic energy of each gas particle

• pressure increased due to the smaller volume and more collisions with the sides of the syringe

• molecules collided less due to the pressure decreased due to smaller volume of molecules

• pressure increased because molecules were moving faster due to the increase number of molecules

Which box has the most pressure?

• The one to the far right, since it is the most dense and more chance of collisions

• The one to the far left, since it has more space to move and collide with the walls.

• All of them has the same pressure

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2