8.5c and 6.6a

The atoms of a certain element each contain 11 protons and 1 valence electron. Which statement correctly identifies this element and describes it 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.

The model of the periodic table shows the locations of four elements. A student is asked to identify an element that is a pale-yellow brittle solid and does not conduct electricity. At which location in the periodic table above would the element most likely be found?

• 1

• 2

• 3

• 4

The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed below.

Which of these elements is in this group?

• Lithium

• Strontium

• Aluminum

• Silicon

Which two elements on the periodic table are in the same period?

• Sn and Rb

• F and Cl

• K and Ba

• Se and Te

A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown. Which two atoms are of elements in the same group in the periodic table?

• Atom 1 and Atom 2

• Atom 1 and Atom 4

• Atom 2 and Atom 3

• Atom 3 and Atom 4

Tags

NGSS.MS-PS1-1

Students in a science class prepared flash cards so that they could quiz one another about the arrangement of the periodic table. One of the flash cards contained information about two elements, Element L and Element M.

The students had to use the information on the flash card to determine possible positions of the two elements on a blank periodic table. Which periodic table has the elements placed in locations that match the information on the flash card?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

For an investigation a student records data about four unknown substances.

The student then calculates the densities of the unknown substances and compares them with the table of densities of known substances shown.

Which unknown substance is most likely carbon? (You can use a calculator to help you)

• Substance 1

• Substance 2

• Substance 3

• Substance 4

Aluminum, sulfur, and chlorine are elements found on the periodic table. Tests involving these three elements would show that at normal room temperature...

• sulfur is malleable and aluminum conducts electricity

• chlorine is malleable and conducts electricity

• aluminum is malleable and conducts electricity

• all three elements are malleable and conduct electricity

Some students conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table below.

Based on these observations, which sample is most likely a nonmetal?

• Sample 1

• Sample 2

• Sample 3

• Sample 4

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

Tags

NGSS.MS-PS1-1