WorksheetsChemistry Review Element Identity and Reactivity
Total questions: 4
Worksheet time: 20mins
Four students were asked to name the parts of an atom that determine the atom's identity and chemical properties. The students' responses are shown in the table. Which student's responses are correct?
Student 1
Student 2
Student 3
Student 4
The atoms of a certain element each contain 11 protons and 1 valence electron. Which statement correctly identifies this element and describes its chemical reactivity.
The element is sodium, and it is highly reactive
The element is fluorine, and it is not very reactive
The element is sodium, and it is not very reactive
The element is fluorine, and it is highly reactive
A model of an atom is shown. An atom of which element is represented by this model?
Boron (B)
Carbon (C)
Neon (Ne)
Sodium (Na)
Tin, Sn, is a soft white metal. It has a low melting point compared with other metals. Tin is widely used as a coating for cans of food. Which statement accurately describes atoms of tin?
Tin atoms have 50 protons
Tin atoms have 5 valence electrons
Tin atoms have 119 neutrons
Tin atoms have 68 electrons
