Johnson Chemistry First Quarter Test/Chapter 1 Test

what is the name for the element whose symbol is H?

hydrogen

in a bonfire, oxygen allows wood to combust, leaving behind ashes. in this process, oxygen and wood are the reactants, and ashes are the _________________.

product

in which group can you find the element nickel?

10

in which period can you find the element iron?

4

Find the symbol for the element chlorine

Cl

find the symbol for the element helium

He

find the symbol for the element iodine

I

find the symbol for the element tin.

Sn

what is the charge of an ion that has one less electron than the total number of electrons in the atoms before the ion formed? a. +1 b. -1 c. +2 d. -2

a. +1

how many protons are in the nucleus of an atom of sodium? a. 11 b. 12 c. 23 d. 32

a. 11

which of these elements is a metalloid? a. As b. Be c. Ca d. K

a. As

Mendeleev's table of the elements was organized by ___________. a. atomic numbers b. relative atomic masses c. the elements' phases; solid, liquid, and gas d. each element's combining capacity with oxygen

a. atomic numbers

the chemical formula for baking soda is NaHCO₃. The subscript "3" in this formula means three ____________. a. atoms of oxygen b. atoms of carbon c. molecules of carbon dioxide d. molecules of baking soda

a. atoms of oxygen

a nonmetal is usually __________. a. brittle b. malleable c. a good conductor d. used to make jewelry

a. brittle

a physical property of a substance _____________. a. can be determined without changing the identity of the substance b. depends on the way a substance reacts c. is a property that helps support life d. involves breaking the chemical bonds that hold compounds together

a. can be determined without changing the identity of the substance

use the following balanced equation to answer the following question: 2KBr + 2H₂SO₄ + MnO₂ → K₂SO₄ + MnSO₄ + 2H₂O + Br₂ A B C D E F G Substance The number 2 in the formula of substance A is called _________. a. a coefficient b. a subscript c. an exponent d. a scientific notation

a. coefficient

which type of matter is propane? a. compound b. element c. solution d. atom

a. compound

which of the three basic subatomic particles has a mass much less than the other two? a. electrons b. neutrons c. protons d. isotope

a. electrons

Vertical columns of elements in the periodic table are called ___________. a. families b. rows c. series d. periods

a. families

when an atom of magnesium becomes a magnesium ion (Mg²⁺), the atom must a. lose two electrons b. lose two protons c. gain one neutron d. gain one electron

a. lose two electrons

if an atom loses an electron, it becomes a a. positive ion b. negative ion c. positron d. neutron

a. positive ion

the mass number of an atom of an isotope is equal to the sum of the a. protons + neutrons b. protons + electrons c. neutrons + protons - electrons d. neutrons + electrons + protons

a. protons + neutrons

which of these is a chemical property? a. resistance to corrosion b. malleability c. boiling point d. solubility in water

a. resistance to corrosion

which statement explains why the melting points of Group 1 metals decrease as atomic number increases? a. the attraction between protons and outer electrons of the atomic of the metal decrease. b. the attraction between protons and outer electrons of the atomic of the metal increase. c. the density of the metals decrease going down the group. d. the malleability of the metals increase going down the group.

a. the attraction between protons and outer electrons of the atomic of the metal decrease.

an atom is _____________. a. the smallest unit of matter that maintains its chemical identity. b. the smallest unit of a compound. c. always made of carbon. d. smaller that an electron.

a. the smallest unit of matter that maintains its chemical identity

find the name for the element whose symbol is Al.

aluminum

what charge do elements in the halogen group have when they form ions? a. +1 b. -1 c. -2 d. +2

b. -1

what is the atomic number of an isotope that has a mass number of 19 and a nucleus containing 9 neutrons? a. 9 b. 10 c. 19 d. 28

b. 10

the nucleus of an atom of iron with a mass number of 56 has _________. a. 26 protons and 26 neutrons b. 26 protons and 30 neutrons c. 30 protons and 26 neutrons d. 30 protons and 30 neutrons

b. 26 protons and 30 neutrons

which formula is correct for the ionic compound formed from combining magnesium ions and chloride ions? a. MgCl b. MgCl₂ c. Mg₂Cl d. Mg₂Cl₂

b. MgCl2

a compound is __________. a. a pure substance that cannot be broken down into simpler, stable substances. b. a substance, made of two or more atoms that are chemically bonded, that can be broken down in to simpler, stable substances. c. the smallest unit of matter that maintains its chemical identity. d. any substance, whether it is chemically bonded or not.

b. a substance, made of two or more atoms that are chemically bonded, that can be broken down in to simpler, stable substances.

which type of matter is chlorine? a. compound b. element c. solution d. solid

b. element

the number of neutrons in the nucleus of a hydrogen atom with a mass number of 3 is ______________ the number of neutrons in the nucleus of a hydrogen atom with a mass number of 1. a. less than b. greater than c. the same as d. not known with the information provided

b. greater than

vertical columns of elements in the periodic table are called: a. periods b. groups c. series d. rows

b. groups

which statement is correct about an atom with 12 protons? a. it has a mass number of 12 b. it has an atomic number of 12 c. it has10 electrons d. it must have 12 neutrons

b. it has an atomic number of 12

matter includes all of the following expect __________. a. air b. light c. smoke d. water vapor

b. light

the two major categories of chemical elements are ___________. a. metals and gases b. metals and nonmetals c. atoms and ions d. solids and liquids

b. metals and nonmetals

the chemical name of K₂SO₄ is a. phosphorus sulfate b. potassium sulfate c. potassium sulfite d. potassium sulfide

b. potassium sulfate

substance in a chemical reaction that exist after the reaction takes place are called the _________. a. reactants b. products c. protons d. electrons

b. products

metalloids are often ___________. a. unreactive. b. semiconductors. c. lanthanides. d. from outer space.

b. semiconductors

the two most important properties of all matter are ___________. a. the ability to carry an electric current well and to hold electric charge. b. taking up space and having mass. c. being brittle and hard. d. being malleable and ductile.

b. taking up space and having mass.

what is the charge on the anion in the substance C in the following equation? Cu₂S + 12HNO₃ ---> Cu(NO₃)₂ + CuSO₄ + 10 NO₂ + 6 H₂O a. 3- b. 2- c. 1- d. 1+ e. 2+

c. 1-

what is the total number of neutrons in an atom with a mass number of 206 and 82 protons? a. 82 b. 103 c. 124 d. 164

c. 124

if the formula for potassium oxide is K₂O, what is the correct formula for a compound containing cesium and sulfur? a. Cs₂SO₄ b. CsS₂ c. Cs₂S d. Cs₂S₂

c. Cs₂S

which of the following statements about atomic number is false? a. it is the whole number used to numerically order the elements. b. it represents the number of protons c. it is the relative amount of mass of the element d. it equals the number of electrons when the element is a neutral atom

c. it is the relative amount of mass of the element

what two measurements of a substance make up the substance's density value? a. mass and weight b. volume and pressure c. mass and volume d. temperature and mass

c. mass and volume

which of the following is not a chemical change? a. rusting b. igniting c. melting d. burning

c. melting

horizontal rows of elements in the periodic table are called: a. families b. series c. periods d. columns

c. periods

Fact 1: Iron has a silvery color. Fact 2: Iron turns a dull red color after it is exposed to oxygen. The first fact describes a _________, and the second fact describes a ___________. a. physical change; physical property b. chemical change; chemical property c. physical property; chemical change d. physical property; physical property e. physical property; physical change

c. physical property; chemical change

KBr + AgNO₃ → KNO₃ + AgBr A B C D what is the name of substance A? a. potassium monobromide b. Kassium bromine c. potassium bromide d. dipotassium monobromide

c. potassium bromide

which element is a semiconductor? a. copper b. calcium c. silicon d. sulfur

c. silicon

a chemical change occurs when ___________. a. ice melts b. copper bends c. silver tarnishes d. propane vaporizes

c. silver tarnishes

an apple turning brown after being cut is an example of a _________________ change.

chemical

iron and sulfur, when heated, form an iron sulfide that has different properties from either iron or sulfur. the formation of iron sulfide is an example of a __________________ change.

chemical

what is the mass number of an atom with 19 protons and 23 neutrons in its nucleus? a. 19 b. 23 c. 39 d. 42

d. 42

what is the number of electrons in a calcium ion, Ca²⁺? a. 18 b. 20 c. 40 d. 42

d. 42

the formula for calcium oxide is CaO. What is the correct formula for a formula compound made of barium and sulfur? a. BaS₂ b. Ba₂S c. Ba₂S₂ d. BaS

d. BaS

the formula for aluminum chloride is AlCl₃. What is the formula for a compound containing gallium and bromine? a. GaBr b. Ga₃Br c. Ga₃Br₃ d. GaBr₃

d. GaBr₃

which represents an isotope with atoms that have the most neutrons per atom? a. Ca with a mass number of 37 b. Ca with a mass number of 40 c. K with a mass number of 39 d. K with a mass number of 42

d. K with a mass number of 42

which of these elements is most chemically similar to phosphorus? a. Si b. S c. C d. N

d. N

KBr + AgNO₃ → KNO₃ + AgBr A B C D what is the anion in substance B? a. N b. O c. O₃ d. NO₃

d. NO₃

it is easy to determine whether a substance is a metal if the substance is ______________. a. easy to break down into its components b. very hard c. very brittle d. a good electrical and heat conductor

d. a good electrical and heat conductor

a chemical change occurs when ___________. a. dissolved minerals solidify to form a crystal. b. ethanol is purified through distillation. c. salt deposits form from evaporated seawater. d. a leaf changes color in the fall.

d. a leaf changes color in the fall.

which of the following is not a physical change? a. grinding b. cutting c. boiling d. burning

d. burning

which two words are most closely related? a. symbol and equation b. symbol and compound c. formula and reaction d. formula and compound e. equation and element

d. formula and compound

a physical change occurs when a ____________. a. peach spoils b. silver bowl tarnishes. c. bracelet turns your wrist green d. glue gun melts a glue stick

d. glue gun melts a glue stick

a measure of the quantity of matter is ___________. a. density b. weight c. volume d. mass

d. mass

nitrogen monoxide and oxygen, both colorless gases, form a red-brown gas when mixed. Nitrogen monoxide and oxygen are called the ______________. a. products b. equilibrium c. synthetics d. reactants

d. reactants

ionic bonding most resembles ________________. a. dissolving b. sharing c. folded over d. static cling

d. static cling

all of the following are chemical changes except ____________. a. woods burns in a fireplace b. a glass of milk becomes sour c. mold "grows" on cheese d. sugar dissolves in water

d. sugar dissolves in water

which metal will not react with oxygen gas in the air? a. Mg b. Na c. Fe d. Al e. Au

e. Au

which symbol represents a metal element? a. Ar b. I c. B d. Se e. Pb

e. Pb

what 2 pieces of information does a chemical formula provide? __________________ and ____________________.

elements; number of atoms

in which group can you find the element carbon?

group 14

find the name for the element whose symbol is Pb

lead

find the name for the element whose symbol is Mg

magnesium

in which period can you find the element gold?

period 6

find the name for the element whose symbol is P

phosphorus

the melting of butter is a __________________ change because it does not produce any new substances.

physical

when examining a mineral, hardness and color are two of the properties used for identification. harness and color are examples of ___________________ properties.

physical

the oxygen in air causes iron to rust. iron and oxygen are __________________ in this process, and rust is the product.

reactant