PS Unit 5 Practice Questions

At room temperature, none of the metals are

• Gases

• Soft

• Malleable

• Liquids

Which can be broken down chemically into simpler substances?

• Isotopes

• Atoms

• Compounds

• Elements

A student mixes salt and water in a beaker to form a solution. What properties of the substances would allow the student to then separate the components?

• Density

• Particle Size

• Boiling Point

• Conductivity

What do any two samples of the element mercury (Hg) have in common?

• Same Mass

• Same Volume

• Same type of atom

• Same number of electrons

A student observed a sample of water in three states of matter. The student should describe the liquid water as a state of matter that has

• more kinetic energy than the solid state.

• more mass than the solid state.

• less kinetic energy than the solid state.

• less volume than the solid state.

Which element will have properties MOST similar to those of potassium?

• Argon

• Chlorine

• Phosphorous

• Sodium

Which best describes the structure of fluorine-19?

• 2 electrons in the first energy level; 7 electrons in the second energy level

• 2 electrons in the first energy level; 8 electrons in the second energy level

• 9 protons and 9 neutrons in the nucleus

• 10 protons and 9 neutrons in the nucleus

Based on the periodic table of the elements, which of these elements has properties MOST similar to calcium (Ca)?

• carbon (C)

• barium (Ba)

• sodium (Na)

• manganese (Mn)

Which of the following sets of elements has the MOST similar physical and chemical properties?

• K, Ca, Sr

• K, Cs, Fr

• K, Ca, Rb

• K, Sr, Li

Elements with the same valence electron configuration can be expected to have similar

• atomic mass.

• chemical reactivity.

• numbers of protons.

• numbers of electrons.