Teacher Portal
Atomic Structure
Investigation 4
Investigation 4
Atomic Structure
Phase 1 – Defined Understanding
Student Guide
Download and Distribute
Access Teacher Guide
Student Guide with answers
Teacher PreLab
Prepare for the Experiment
Phase 2 – Dynamic Understanding
► Investigation Four Summary – Elements and Conductivity of Electricity
In Investigation Four, you studied the chemical and physical properties of metalloids. During this Investigation, you:
1. Analyzed the reactivity of silicon (Si), zinc (Zn), and carbon (C) in hydrochloric acid (HCl).
2. Tested the conductivity of electricity of the following metalloids: Zinc (Zn), Carbon (C), and Silicon (Si)
3. Organized elements as metals, non-metals, and metalloids using a Venn Diagram.
► Investigation Four Summary – Learning Goals
Through these experiments, you concluded that:
1. A metalloid is an element that can have the properties of both metals and nonmetals.
2. Metalloids can be found on the border of the Periodic Table of Elements‘ metals and nonmetals. The metalloids are boron (B), silicon (Si), arsenic (As), tellurium (Te), germanium (Ge), antimony (Sb), polonium (Po) and astatine (At).
3. The Periodic Table separates elements into metals, nonmetals, and metalloids. All of the elements on the left side of the border that run through Groups 13-17 are metals except hydrogen (H). The elements on the right side of the Periodic Table are nonmetals. Finally, the elements between the nonmetals and the metals are the metalloid elements.
Concept Slides
Launch and Discuss
Mathematics Concepts in This Investigation
- grouping/classifying
- qualitative/quantitative properties
- comparing (non)measurable characteristics
- measuring electrical current in milliamps
- decimals to the nearest tenth
- data table
- data analysis
- Venn Diagram