SMA 10 P.1.1, 1.2

Which is the best description of a solution?

• element

• compound

• homologous mixture

• heterogeneous mixture

Which best describes a compound?

• the simplest form of matter

• an element that has changed state

• a physical mixture of chemicals and elements

• a chemical combination of two or more elements

Which has only one type of atom throughout?

• compound

• element

• mixture

• molecule

Which best describes sodium chloride (NaCl)?

• a mixture which is physically produced

• a mixture which is chemically produced

• a compound which is physically produced

• a compound which is chemically produced

Water (H2O) and hydrogen peroxide (H2O2) are both clear liquids. Which description most accurately describes the relationship between water and hydrogen peroxide?

• They are two different elements.

• They are two different compounds that include different elements.

• They are two different compounds that include the same elements in different arrangements.

• They are two different mixtures that include the same elements in different arrangements.

Which two elements are most likely

ductile?

• C and P

• Zn and N

• Si and Ne

• Ag and Au

If potassium (K) has a density of 0.86 g/cm3, which element would have a similar density?

• Carbon (C)

• Neon (Ne)

• sodium (Na)

• Iron (I)

Which best describes the use of physical properties to produce the current model of the periodic table?

• Elements are arranged into groups based on similar properties.

• The arrangement of the elements is unrelated to physical properties.

• Physical properties are only used to differentiate between metals and nonmetals.

• Elements are arranged from left to right according to the increase in metallic properties.

Why are fluorine (F), chlorine (Cl), and iodine (I) in the same group of the periodic table?

• They have similar atomic masses.

• They have similar physical properties.

• They have similar boiling and melting points.

• They have similar reactions with other elements.

What category of elements is found between the metals and nonmetals on the periodic table?

• synthetic

• metolloide

• radio active

• noble gases