Group 5 & 6: Experiment 3 (iron in ordinary water)
Group Work :
Retell the experiment you read just now in your group. Later you will perform in front of us.
One will describe what we need and how we do it, and the other will follow the instructions and perform.
Words about chemical elements
1. Fe 2. Mg 3. Ca 4. Al 5. Cu 6. Zn 7. Na 8. K
Do you like magic?
My magic letter
My magic letter
_A__im__
To find out what happens when
lemon juice is heated
_A_p_p_a_r_a_t_u_s er,
2. Write down the experiment report on paper ;
3. Introduce the experiment in front of us.
How to write the report?
Show Time
Summary
Different metals have different uses. When we use metals, 1__i_t_ is important to know how they react with different substances. By doing some simple 2_e_x_p_e_r_i_m_e_n_t_s__ (experiment), we can achieve the 3_f_o_l_lo_w__in_g_ (follow) aims. Firstly, put them in order according to the 4_r_e_a_c_t_io_n__ (react). Secondly, find 5__o_u_t if iron rusts in dry air, in airfree water and in ordinary water. In order 6 _to__a_c_h_ie_v_e_(achieve)the second aim, we need different pieces of equipment. 7__H_a_v_i_n_g_m__a_d_e___(make) full preparations, we can go to the different stages of the experiment. During each stage, relative methods should 8_b_e__u_se_d__(use). After that, we will get different results and make the conclusions 9_t_h_a_t_ iron does not rust in dry air and in air-free water 10_b_u_t_ it rusts in ordinary water.
