2024 Physical Science Chapter 5

Front

Mendeleev arranged the known chemical elements in a table according to increasing: atomic number, number of electrons, number of protons, mass

Back

mass

Front

In a science class, Liam was learning about the periodic table and discovered that Mendeleev gave the name eka-aluminum to a(an)

Back

unknown element he predicted would have properties similar to those of aluminum.

Front

In a science class, Avery was learning about the periodic table. The teacher explained that the usefulness of Mendeleev's periodic table was confirmed by

Back

the discovery of elements with predicted properties.

Front

Noah and Ava are looking at a blank periodic table. They need to identify the segments labeled A and B. What do these segments represent?

Back

A is a period and B is a group.

Front

The atomic mass of an element is

Back

a weighted average of the masses of an element’s isotopes.

Front

One twelfth the mass of a carbon-12 atom is used to define a(an)

Back

atomic mass unit

Front

Ethan is working on a science project and needs to measure the atomic mass of a sample. What unit should he use?

Back

amu

Front

Which list of elements contains only metals? Options: carbon, iodine, tin, copper, cesium, helium, iron, lead, bromine

Back

tin, copper, cesium

Front

Which statement is true about the metalloid silicon? Options: Silicon is a better conductor of electric current than silver is., Silicon does not conduct electric current under any conditions., Silicon's ability to conduct electric current does not vary with temperature., Silicon is a better conductor of electric current than sulfur is.

Back

Silicon is a better conductor of electric current than sulfur is.

Front

At room temperature, none of the metals are: soft, liquids, malleable, gases

Back

gases