Structure & Properties of Matter: Part #4

Based on the Periodic Table of the Elements, which of the following sets of elements have similar properties?

• Lead (Pb), Tin (Sn), Krypton (Kr)

• Chlorine (Cl), Bromine (Br), Iodine (I)

• Carbon (C), Nitrogen (N), Oxygen (O)

• Lithium (Li), Sodium (Na), Magnesium (Mg)

What can be concluded about the properties of the elements that border this staircase on the Periodic Table of the Elements?

• These elements are metals.

• These elements are liquids.

• These elements have properties of both solids and gases.

• These elements have properties of both metals and nonmetals.

In the modern Periodic Table of the Elements, in order of what property are the elements arranged?

• atomic number

• date of discovery

• number of neutrons

• reactivity with hydrogen

Why is Cobalt (Co) placed before Nickel (Ni) on the Periodic Table of the Elements even though it has a higher average atomic mass than nickel?

• Nickel has fewer electrons.

• Cobalt has a lower density.

• Cobalt was discovered first.

• Nickel has one more proton.

Which statement correctly describes a pattern in the data table, based on the state of matter of the elements at room temperature?

• Gases are usually nonmetals.

• Reactive elements are usually gases.

• Solids always have large atomic numbers.

• Metals always have large atomic numbers.

When would it be appropriate to use a model instead of a controlled experiment?

• if the object of study is too large or small for direct experimentation

• if the study involves observation of behavior in a natural environment

• if the study must determine how a single testable variable causes change

• if the researcher wants to measure a change in a real environment over time

Tags

NGSS.MS-ETS1-4

A group of students analyzed the materials used in different types of sports equipment and found the following composition:

*Material X primarily contains carbon (C), hydrogen (H), and oxygen (O)

• *Material Y contains carbon (C), iron (Fe), and a small amount of nitrogen (N)

• *Material Z contains sulfur (S), silicon (Si), and a trace of magnesium (Mg)

Based on your knowledge of the periodic table and the properties of these elements, which of the following statements is best supported by the data?

• Carbon is a metal that improves electrical conductivity.
  

• Iron is a transition metal known for its strength and ability to form alloys.

• Silicon is a liquid at room temperature and highly reactive.

• Magnesium is a noble gas that does not react with other elements.

Tags

NGSS.MS-PS1-1

The Rutherford-Bohr model of the atom was the first really useful model that accurately illustrated what scientists knew of the structure of atoms in the early 1900s. Based on today's understanding of atoms, what must an accurate, useful model of an atom include?

• protons, neutrons, electrons

• hydrogen, oxygen, potassium

• molecules, bonds, compounds

• ions, alpha particles, gamma ray

Tags

NGSS.MS-PS1-1

A student is given a sample of an unknown liquid to test in the laboratory. The student thinks that the liquid is water. Which of the following properties of the sample is most helpful to determining if the liquid is water?

• color of the liquid

• mass of the liquid

• volume of the liquid

• boiling point of the liquid

Which of the following statements best describes why the mass of a bowling ball would not change if it were transported from Earth to the Moon?

• Gravity is a constant force.

• The bowling ball will adapt to the changes in gravity.

• Matter is resistant to acceleration and changes in gravity.

• The amount of matter in the bowling ball remains the same.

Tags

NGSS.MS-PS1-5