ICP FINAL EXAM

In ionic compounds, the sum of the charges of all the cations and anions must be?

0

Phosphorus is one block to the left of sulfur in the periodic table the atomic number of sulfur is 16 the atomic number of sulfur is?

15

A 25-g sample of sugar was dissolved in 50g of water. The concentration of the solution is?

50 percent by mass

In the periodic table, a set of properties repeats from?

A is a period and B is a group

Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.?

A is a period and B is a groups

In general a(an) (blank) metal will be more reactive than an alkaline earth metal in the same period ?

Alkali

The metallic bonds in a transition metal, such as tungsten, are stronger than the metallic bonds in a(an)?

Alkali

In an ionic compound, the attractions between cations and( blank) hold the compound together?

Anions

The Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?

Atom

Which of the following is NOT part of the John Dalton's atomic theory?

Atoms contain subatomic particles

Beryllium, Be, and chlorine, Cl, form a binary ionic compound with a one-to-two ratio of beryllium ions to chloride ions. The formula for the compound is?

BeCl2

The chemical formula for calcium chloride, CaCl2, shows that the compound contains two (blank) ions for every (blank) ion?

Calcium and chlorine

How does increasing the amount of carbon steal affect its properties?

Carbon makes the lattice harder and stronger

In an atom model that includes a nucleus, positive charge is?

Concentrated in the center of an atom

The physical properties of a solution that differ from those of its solute and solvent include freezing point, boiling point and (blank)?

Conductivity

And in simplest form, alloy brass contrast zinc in (blank)?

Copper

The ions in solid sodium chloride are arranged in a structure called a(an) (blank) lattice?

Crystal

Study figure 8-1 when KBr dissolves in water, the K+ and Br ions are pulled into solution the process also known as?

Dissociation

In an electron dot diagram, each that represents a(an) ?

Electron

A polar covalent bonds forms when (blank) are not shared equally between atoms?

Electrons

Which statement about metals is true?

Electrons in a metal lattice are free to move

Who provided evidence for the existence of a nucleus in an atom?

Ernest Rutherford

Which of the following groups contain three elements with stable electron configuration's?

Helium, neon, and xenon

Table salt is (blank) soluble in cold water than it is in hot water ?

Less

In Niels Bohr's model of the atom, electrons move?

Like planets orbiting the sun

From left to right across a Period in the periodic table, elements become less (blank) and more (blank )and their properties?

Metallic and nonmetallic

Which general statement does NOT apply to metals?

Most metals are brittle

Which of the following formulas represents a compound whose molecules contain a triple bond?

N=N

Which of the following compounds does not contain molecules?

NaCl

Although they are called ____________________ lights, they can contain any noble gas.?

Neon

Study the electron dot diagrams for lithium, carbon, fluorine, and neon in Figure 6-1. Choose the statement that correctly identifies the most stable of the elements.?

Neon is the most stable element because its highest occupied energy level is filled

A(An) (blank) ion is a covalently bonded group of atoms that has a positive or negative charge?

Polyatomic

Which statement about subatomic particles is NOT true?

Protons and neutrons have the same charge

The maximum amount of a solutes that will dissolve in certain amount of solvent at a given temperature is that solute?

Solubility

The usefulness of Mendeleev's periodic table was confirmed by ?

The discovery of elements with predicted properties?

What can you assume has happened if an electron moves to a higher energy level?

The electron has gained energy

A student dissolved equal amounts of salt in equal amounts of warm water, room-temperature water, and ice water. Which of the following is true?

The salt dissolved most quickly in the warm water.

Because water molecules are polar and carbon dioxide molecules are nonpolar?

Water has a higher boiling point than carbon dioxide does

Typically, atoms gain or lose electrons to achieve?

a stable electron configuration

Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?

atomic number

The number of protons in one atom of an element is the elements?

atomic number

To find the number of neutrons in and Adam you would subtract?

atomic number from mass number

In a metal lattice, _____ are surrounded by a pool of shared electrons.?

cations

Many metals can be drawn into thin wires without breaking because?

cations are still surrounded by electrons when they shift their positions in the lattice

The rate that a solid solute dissolves in a liquid solvent depends on the frequency and energy of the ____________________ between the particles of the solute and solvent.?

collisions

Reactive elements, such as alkali metals and halogens, are found in nature only as ____________________.

compounds

If copper (II) appears in the name of a compound, it indicates that the compound contains.?

copper ions with a 2+ charge

During the formation of solution, energy is?

either released or absorbed

Which subatomic particle has a negative charge?

electron

In a polar covalent bond?

electrons are not shared equally

A food packet taken on a camping trip has a warming packet. This packet contains water and a solute that releases heat when it is dissolved. The dissolving process for this solute and solvent can be described as ____________________?

exothermic

At room temperature, none of the metals are?

gases

A salt is dissolved in water, which has a boiling point of 100°C. The boiling point of the solution will be?

greater than 100°C.

The solubility of carbon dioxide gas in water can be increased by?

increasing pressure

Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound?

lithium fluoride

Mendeleev arranged the known chemical elements in a table according to increasing?

mass

Mendeleev organized elements in his periodic table in order of increasing?

mass

In order for a solution to form?

one substance must dissolve in another

One way to determine the degree of saturation of a solid liquid solution is to drop a crystal of the solute Into the solution. If the Crystal sits at the bottom of the container, the solution is?

saturated

Which list of elements contains only metals?

sodium, chromium, copper

When sugar dissolves in water, water is the ____________________ and sugar is the ____________________.

solvent and solute

A solution that contains more solute than it would normally hold at that temperature is said to be?

supersaturated

Which phrase best describes a metallic bond?

the attraction between a metal cation and a shared pool of electrons

In the compound MgCl2, the subscript 2 indicates that?

there are 2 chloride ions for each magnesium ion

Element 3, lithium, has one valence electron, and element 4, beryllium, has two valence electrons. Element 5, boron, has ___ valence electrons.?

three

The formation of an ionic bond involves the?

transfer of electrons

In the name carbon dioxide, the prefix of the second word indicates that a molecule of carbon dioxide contains?

two oxygen atoms