CBN Changes

which of these example is a physical change?

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Tags

NGSS.MS-PS1-4

1. Sugar dissolves in warm water
 
 

• Physical change

• Chemical Change

Based on the heating curve, what happens to the particles within a substance as it changes from a liquid to a gas?

• When changing to a gas, the particles within a substance break free of each other, move randomly and freely, with no defined volume.

• As the temperature decreases, the particle vibrations within a substance increases, causing them to move faster and more freely.

• When changing to a gas, the particles within a substance slide past each other, move randomly and freely, with a defined volume

• Intermolecular forces hold the particles within the substance close together during the phase change. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The phase change from water vapor to liquid water is known as...

• evaporation

• precipitation

• condensation

• sublimation

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

At Point A, the beginning of observations, the substance exists in a solid state. Material in this phase has a ____________ volume and ___________ shape.

Tags

NGSS.MS-PS1-4

At POINT C, the substance is completely _____________, or in a ____________ state.

Tags

NGSS.MS-PS1-4

During the time from POINT D to POINT E, the liquid is _____________.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

By POINT E, the substance is completely in the ____ phase.

Tags

NGSS.MS-PS1-4

Material in this phase has _________ volume and ____________ shape.

Tags

NGSS.MS-PS1-4

As a change of state, from solid to liquid, takes place heat _____ and temperature _______.

• increases, stays the same

• stays the same, stays the same

• stays the same, changes

• increases, increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4