8.6C

Science SE

Matter and energy. The student understands that matter can be classified according to its properties and matter is conserved in chemical changes that occur within closed systems.

Content

The student is expected to describe the properties of cohesion, adhesion, and surface tension in water and relate to observable phenomena such as the formation of droplets, transport in plants, and insects walking on water;

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Actions

Describe
Relate

Focus

the properties of cohesion in water
the properties of adhesion in water
the properties of surface tension in water

Such as

the formation of water droplets
transport in plants
insects walking on water

Cohesion

The attractive forces between water molecules that allow them to stick together and form hydrogen bonds.

Adhesion

The attractive force between the water molecules and another substance, such as a solid surface or another liquid.

Surface Tension

A measure of the force that acts on the surface of a body of water, causing it to resist deformation or rupture.

Vertical TEKS Alignment

Matter and Energy - Physical & Chemical Properties

3.6.A measure, test, and record physical properties of matter, including temperature, mass, magnetism, and the ability to sink or float in water;

3.6.B describe and classify samples of matter as solids, liquids, and gases and demonstrate that solids have a definite shape and that liquids and gases take the shape of their container;

4.6.A classify and describe matter using observable physical properties, including temperature, mass, magnetism, relative density (the ability to sink or float in water), and physical state (solid, liquid, gas);

5.6.A compare and contrast matter based on measurable, testable, or observable physical properties, including mass, magnetism, relative density (sinking and floating using water as a reference point), physical state (solid, liquid, gas), volume, solubility in water, and the ability to conduct or insulate thermal energy and electric energy;

6.6.A compare solids, liquids, and gases in terms of their structure, shape, volume, and kinetic energy of atoms and molecules;

6.6.D compare the density of substances relative to various fluids;