R17e(The 3D model of Atoms)

The 3D model of "atomic weight "and "atomic size"

PURPOSE

These models are effective when teaching the atomic weight and atomic size.

TARGET

Junior high school Students (8th Grade)

HOW TO MAKE

All parts are shown in Fig.1

(1) Styrofoam ball (as shown in Table.1）

(2) Lead plate

(3) Neodymium magnet (One model needs two.)

(4) Metal washer (One model needs two.)

(5) Electron configuration

Table.1

Fig.1

Production process

(1) Cut a Styrofoam ball to half.

(2) Gouge the center of the Styrofoam ball out. (Fig.2)

(3) Measure total mass of the atom to make. (Fig.1 ①～④ and Fig.3)

Make total mass a quantity same as atomic weight.

When total mass is not same as atomic weight, add lead plates or gouge the Styrofoam ball out.

(4) Bend a lead plate and put it in the Styrofoam ball.(Fig.4)

(5) Buries neodymium magnet in the Styrofoam ball. (Fig.4)

(6) Put electron configuration (Fig.1 ⑤) on the Styrofoam ball. (Fig.5)

(7) Attach metal washers to another half Styrofoam ball.

The place is same as neodymium magnets. (Fig.6)

(8) Put two half Styrofoam ball together, and measure total mass. (Fig.7,8)

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

HOW TO USE

Arrange the 3D model according to mass small

Fig.9

The 3D model materials lined up on the periodic table.