SC 8 P 8 6

Based on its location in the periodic table, what statement best describes the element Ca?

• It breaks easily like glass

• It is shiny and can be bent and shaped

• It does not conduct electricity

• It is definitely not a metal

Sodium and chlorine atoms combine in a 1:1 ration to form sodium chloride (NaCl). Chlorine will also combine in the same ratio with any element that has similar properties to sodium. Which of these sets of elements will also combine with chlorine (Cl) in the same ratio?

• F, Br, I, At

• H, Li, K, Rb

• O, S, Se, Te

• Mg, Al, Si, P

Tags

NGSS.MS-PS1-5

Two major categories of compounds in living systems are lipids and carbohydrates.  Both types of compounds are made up of carbon, hydrogen, and oxygen.  There are many different types of compounds in each category.  What can you conclude from this information?

• Most elements can be found in nature

• Elements can combine in many different ways

• Nonliving things are made up of other elements

• Living things contain only carbon, hydrogen, and oxygen

When six atoms of carbon are combined with twelve atoms of hydrogen and six atoms of oxygen, the combination is a simple sugar.  Which answer below best describes that combination of atoms?

• Element

• Solution

• Mixture

• Compound

Tags

NGSS.MS-PS1-1

Which pair of elements listed below has properties that are the most similar to each other?

• Boron (B) and Carbon (C)

• Krypton (Kr) and Xenon (Xe)

• Phosporous (P) and Aluminum (Al)

• Arsenic (As) and Argon (Ar)

Which of the following statements is true of the elements?

• All elements can form several different compounds when combined with each other.

• Most elements can form several different compounds when combined with each other.

• Only elements in the same group can form different compounds when combined with each other.

• Only elements in the same period can form different compounds when combined with each other.

Chlorine is a greenish-yellow corrosive gas at room temperature.  A second element on the periodic table is a pale-yellow corrosive gas under the same conditions.  Which element is most likely to be the second element and why?

• Aluminum because it is in the same period as Chlorine

• Fluorine because it is in the same group as Chlorine

• Bromine because it is about twice the mass as Chlorine

• Argon because it has a similar mass to Chlorine

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

Is liquid at room temperature

Has atoms with seven valence electrons

Which of these elements is in this group?

• Lithium

• Potassium

• Zirconium

• Bromine

Potassium (K) is found in group 1 of the periodic table.  Which group would it most likely bond with? 

• Group 1

• Group 2

• Group 7

• Group 8

Which one is NOT found on the periodic table?

• Zirconium

• Water

• Chlorine

• Hydrogen