Chapter 9 Elements & the Periodic Table

In the periodic table, the most reactive metals are found In Group 1, the first column on the left In Period 1, the first row across the top In Groups 13-16 in the center In periods 6& 7 at the bottom

Which of these statements about a column of the periodic table is true? The elements have similar characteristics. The elements have a wide range of characteristics. The elements have the same atomic number. The elements have the same atomic mass.

At room temperature, more than half of the nonmetal elements are Alloys. Gases Liquids. Solids.

The elements that do not ordinarily form compounds are elements in the carbon family. metals. halogens. noble gases.

In general, which of the following statements about metals is true? Metals need to be stored in sealed containers for safety. Metals are malleable, ductile and can carry electric current. Metals are highly reactive substances. Metals do not react with oxygen.

From an element’s location in the periodic table, you can predict its properties. its chemical name. its chemical symbol. when it was discovered.

The atomic number of an element is based on the mass of its nucleus. number of electrons around its core. number of protons in its nucleus. number of neutrons in its nucleus.

Mendeleev created the first periodic table by arranging elements in order of decreasing atomic mass. increasing atomic mass. increasing atomic number. increasing melting points and densities.

Alkali metals are so reactive they are synthetically made in laboratories. found combined with other elements. found in igneous rocks. bonded to noble gases.

The two rows at the bottom of the periodic table are called the lanthanides and halogens. actinides and transuraniums. transition metals and transuraniums. lanthanides and actinides.

Fluorine, chlorine, bromine and iodine are part of a family called noble gases. metalloids. halogens. alkali metals.

Which group of elements have some properties of metals and some properties of nonmetals? noble gases metalloids halogens transition metals

Which particles in atoms have a negative charge? electrons protons neutrons nuclei

Which parts of the atom move around outside of the nucleus? atomic mass units electrons protons neutrons

The elements in a row of the periodic table are in the same family. have the same or nearly the same properties. have the same average atomic mass. have properties that change in a pattern.

In an atom, the number of protons equals the number of nuclei. electrons. neutrons. isotopes.

A material is said to be ductile if it can be pulled out, or drawn, into a long wire. can be hammered or rolled into flat sheets and other shapes. can transfer heat or electricity to another material. is a mixture of a metal with at least one other element.

Which group contains the most elements? metalloids nonmetals metals transition elements

A material can be considered malleable if 1. It is shiny or sparkly 2. It can transfer heat or electricity to another material. 3. It is a mixture of a metal with at least one other element. 4. It can be hammered or rolled into flat sheets and other shapes.

The modern periodic table is organized according to Atomic mass Number of neutrons Type of isotope Atomic number

Nonmetals are found on the ___ side of the periodic table and are _______ Left, soft and shiny Right, hard and dense Middle, semiconductors and dull Right, brittle and dull Bottom, synthetic and dense

Atoms with the same number of protons but different number of neutrons are called Transuranium elements Transition metals Metalloids Molecules Compounds Isotopes

Two chemical properties of metals are Electrical conductivity and reactivity Corrosion and luster Malleability and ductility Reactivity and corrosion

Most metals are in a ______ state at room temperature Gaseous Liquid Solid Isotopic corrosive

Deterioration that occurs because of being in an environment is called Corrosion Reactivity Brittleness Electrical conductivity Thermal conductivity

Most of the elements that touch a zigzag line in the periodic table belong to the Transuranium elements Nonmetals Metals Transition metals Halogens Metalloids Noble gases

Which nonmetal has properties so unlike the other non-metals that it is in its own family and place on the periodic table? Nitrogen Oxygen Selenium Hydrogen Chlorine

All elements that have a higher atomic number than 95 are called Transition elements Transuranium elements Metalloids Lanthanides Mixed group metals

Which is correct? Rows are groups, columns are families Rows are families, columns are periods Rows are families, columns are groups Rows are periods, columns are families

Which is not true about neutrons? They are found in the nucleus They have a negative charge They make up the mass of the atom with the protons They can vary in atoms of the same elements

Challenge: Can you name the first 10 elements in the periodic table in order?