Exam 1

Question

An example of basic research

Answer 1

the study of the relationship between the amount of automobile emissions gases in the atmosphere and the decomposition of atmospheric ozone.

Answer 2

the design of new batteries for electric cars.

Answer 3

the study of the composition of the atom.

Answer 4

the development of new plastics that can be recycled.

Answer 5

the study of natural compounds in sea animals to look for new molecules that can be used for medicine.

Answer 6

You could adequately describe all of the topics by either model. The choice depends only on the characteristics requiring description.

Answer 7

physical model-gold coin, dollar bill, car engine; conceptual model-virus, air pollution, spread of sexually transmitted disease

Answer 8

conceptual model-gold coin, car engine, virus; physical model-air pollution, spread of sexually transmitted disease, dollar bill

Answer 9

physical model-gold coin, car engine, virus; conceptual model-air pollution, spread of sexually transmitted disease; dollar bill, which could represent wealth, may well be described by either model.

Answer 10

an electron

Answer 11

B and C (a proton, a neutron)

Answer 12

none of the above

Answer 13

elements that have some properties like metals and some like nonmetals

Answer 14

elements that are smaller than metals

Answer 15

elements that have properties different than either the metals or the nonmetals

Answer 16

elements found in asteroids

Answer 17

elements that are larger than nonmetals

Answer 18

lithium (atomic no. = 3)

Answer 19

vanadium (atomic no. = 23)

Answer 20

gallium (atomic no. = 31)

Answer 21

selenium (atomic no. = 34)

Answer 22

potassium (atomic no. = 19)

Answer 23

No, because it would no longer be what it was

Answer 24

No, because there would be no molecules traveling to our nose.

Answer 25

Yes, but only if that body is sweating.

Answer 26

Yes, because it would still release photons.

Answer 27

xenon (Xe)

Answer 28

silver (Ag)

Answer 29

lithium (Li)

Answer 30

chlorine (Cl)

Answer 31

Electrons have a negative charge.

Answer 32

Electrons are particles.

Answer 33

Electrons in atoms can be excited by light energy.

Answer 34

Electrons behave like waves.

Answer 35

all of the above

Answer 36

All of the elements are the same.

Answer 37

physical; physical; chemical; physical

Answer 38

chemical; physical; chemical; chemical

Answer 39

chemical; physical; physical; physical

Answer 40

chemical; physical; chemical; physical

Answer 41

melting temperature

Answer 42

reactivity towards water

Answer 43

boiling temperature

Answer 44

conductivity

Answer 45

flexibility

Answer 46

sulfur (atomic no. = 16)

Answer 47

xenon (atomic no. = 54)

Answer 48

titanium (atomic no. = 22)

Answer 49

selenium (atomic no. = 34)

Answer 50

helium (atomic no. = 2)

Answer 51

Neutrons carry no electric charge and thus have a greater likelihood of passing through the tissue.

Answer 52

Neutrons are much smaller and lighter than protons and would do less damage.

Answer 53

Neutrons travel at reduced speed compared to the speed at which protons travel.

Answer 54

All of the above are reasons why neutrons are less harmful.

Answer 55

The electrons smoothly move from one orbit to the next.

Answer 56

It is a physical model.

Answer 57

The electrons orbit around the nucleus.

Answer 58

The energy difference between the orbits is continuous.

Answer 59

none of the above

Answer 60

an electron

Answer 61

testing a safe, nontoxic mouse glue

Answer 62

testing the strength of a mouse cage

Answer 63

examining how quickly a trapdoor closes

Answer 64

examining why a mouse likes cheddar cheese more than swiss cheese

Answer 65

studying ways of catching mice safely

Answer 66

It is a particle.

Answer 67

Its energy comes in packets of uniform size.

Answer 68

It is a wave.

Answer 69

all of the above

Answer 70

none of the above

Answer 71

They have the same number of electrons.

Answer 72

Their outermost occupied shells are filled to capacity.

Answer 73

They occupy the same number of shells.

Answer 74

all of the above

Answer 75

calcium chloride

Answer 76

dicalcium chloride

Answer 77

carbon chloride

Answer 78

dichlorocalcium

Answer 79

Each component must correlate with a corresponding component of a physical model.

Answer 80

All components interact with each other.

Answer 81

The components have nothing in common. This is what differentiates a conceptual model from a physical model.

Answer 82

All components are mutually independent of each other.

Answer 83

the energy of a nucleus

Answer 84

the floor plan of a house

Answer 85

the behavior of schoolchildren

Answer 86

the weather

Answer 87

both A and B

Answer 88

lithium (Li)

Answer 89

argon (Ar)

Answer 90

indium (In)

Answer 91

cesium (Cs)

Answer 92

The dog is smelling molecules from the cat.

Answer 93

The cat is leading the dog into a trap.

Answer 94

The dog is smelling atoms from the cat

Answer 95

The dog is following the areas of increased density of the Earth.

Answer 96

good conductor of heat

Answer 97

poor conductor of electricity

Answer 98

fluorine sulphide

Answer 99

trifluorosulphide

Answer 100

sulfur trifluoride

Answer 101

sulfur fluoride

Answer 102

none of the above

Answer 103

No. The periodic table changes every year. Memorizing it would be a waste of time.

Answer 104

Yes. Without memorizing the periodic table, one would not have any real understanding of how and why chemical compounds are put together.

Answer 105

Yes. Like the alphabet, we need to memorize the periodic table in order to easily write the language of chemistry.

Answer 106

No. The periodic table is a reference to be used, not memorized.

Answer 107

All of the above

Answer 108

macroscopic

Answer 109

microscopic

Answer 110

submicroscopic

Answer 111

all of the above

Answer 112

none of the above

Answer 113

a physical change

Answer 114

an elemental change

Answer 115

a chemical change

Answer 116

a change in state

Answer 117

Heat energy is speeding up the orbit of the electrons and the resulting Doppler shift causes light to be emitted from the electrons.

Answer 118

An electron is jumping from a low energy state to a high energy state with the difference in energy being converted to light.

Answer 119

Heat energy is converting a neutron into a proton and an electron, which is ejected into the orbit of the nucleus, releasing light energy.

Answer 120

An electron is dropping from a higher to a lower energy level with the difference in energy between the two being emitted as light.

Answer 121

A proton is undergoing a nuclear change in the nucleus and is emitting a high energy light wave in the process.

Answer 122

the lanthanides

Answer 123

the actinides

Answer 124

the halogens

Answer 125

all of the above

Answer 126

none of the above

Answer 127

whether a material will dissolve in acid or not

Answer 128

the tendency of a material to explode

Answer 129

the temperature at which a liquid will boil

Answer 130

whether a metal will rust or not

Answer 131

light sensitivity

Answer 132

doesn't conduct electricity very well

Answer 133

conducts heat very well

Answer 134

transparent

Answer 135

element with the same number of protons but a different number of electrons

Answer 136

element with the same number of neutrons but a different number of electrons

Answer 137

element with the same number of protons but a different number of neutrons

Answer 138

element with the same number of neutrons but a different number of protons

Answer 139

none of the above

Answer 140

a loaf of bread growing mold

Answer 141

grass growing

Answer 142

a rock being crushed to powder

Answer 143

grape juice turning into wine

Answer 144

wood burning to ash

Answer 145

none of the above

Answer 146

the sum of the isotopes

Answer 147

the sum of the electrons and the neutrons

Answer 148

the number of protons

Answer 149

the sum of the protons and the neutrons

Answer 150

the sum of the electrons and the protons

Answer 151

All are the same size.

Answer 152

a piece of metal expanding when heated, but returning to original size when cooled

Answer 153

aftershave or perfume on your skin generating a smell

Answer 154

water freezing into ice crystals

Answer 155

gasoline being used in the engine of a car producing exhaust

Answer 156

breaking a glass window

Answer 157

an elemental change

Answer 158

a chemical change

Answer 159

a physical change

Answer 160

a change in reactivity

Answer 161

a physical change

Answer 162

a molecular change

Answer 163

a chemical change

Answer 164

a decomposition

Answer 165

none of the above

Answer 166

Yes, but that their properties are similar is only a coincidence.

Answer 167

Yes, and this explains how fish are able to breathe water.

Answer 168

No, compounds are uniquely different from the elements from which they're made.

Answer 169

No, but their similar properties are only a coincidence.

Answer 170

temperature at which a material melts

Answer 171

temperature at which a material catches on fire

Answer 172

conductivity

Answer 173

examining how susceptible a metal is to bending

Answer 174

determining how readily a metal corrodes in a wet environment

Answer 175

determining the lightest and strongest metal to be used for an airplane wing

Answer 176

determining the melting temperature of a metal

Answer 177

testing the strength of a piece of metal

Answer 178

a material that has consistent physical properties

Answer 179

a material with more than one type of atom

Answer 180

a material consisting of only one type of atom

Answer 181

a material that has consistent chemical properties

Answer 182

material that is pure

Answer 183

natural fosfate

Answer 184

nitrogen afleck

Answer 185

sodium fluoride

Answer 186

sodium phosphide

Answer 187

natrium fluoride

Answer 188

conducts electricity

Answer 189

a gas at room temperature

Answer 190

It orbits around the nucleus of an atom.

Answer 191

It is a nucleon.

Answer 192

It has a positive charge equivalent but opposite of an electron's.

Answer 193

It is attracted to negatively charged electrical plates.

Answer 194

It is much more massive than an electron.

Answer 195

Physical models and conceptual models can be used to describe the same things.

Answer 196

Physical models can only be used to represent the real world.

Answer 197

A physical model represents the shape and form while a conceptual model describes how a system behaves.

Answer 198

Conceptual models can only be used to describe concepts.

Answer 199

A conceptual model represents the shape and form while a physical model describes how a system behaves.

Answer 200

an elemental change

Answer 201

a chemical change

Answer 202

a physical change

Answer 203

a change in reactivity

Answer 204

A quantum is a wave of light while a packet of quanta equals one photon.

Answer 205

A quantum is a particle of light while a photon is a wave of light.

Answer 206

A quantum of light is actually one photon.

Answer 207

A quantum is a particle of light exactly one photon long.

Answer 208

A quantum of photons is equal to the wavelength.

Answer 209

Nucleons could be excited by different electron energies.

Answer 210

Any photon could excite an electron.

Answer 211

Only certain photons with the correct energy could excite the quanta in the nucleus.

Answer 212

Electrons could only move in discrete energy steps within an atom.

Answer 213

Electrons could not move in an atom.

Answer 214

iodine (I)

Answer 215

silicon (Si)

Answer 216

rhodium (Rh)

Answer 217

hydrogen (H)

Answer 218

helenium (Se)

Answer 219

Elements like dirt and air are so common that there is no need to list them in the periodic table.

Answer 220

Dirt IS listed in the periodic table but is not easily recognized because it is listed as one of the rare earths with its old scientific name, dysprosium, symbol Dy.

Answer 221

The periodic table lists only elements made of one kind of material. Dirt is a mixture of elements and compounds.

Answer 222

None of the above is true.

Answer 223

in group 2 of the periodic table.

Answer 224

soluble in water.

Answer 225

made of relatively large atoms.

Answer 226

carbon dioxide

Answer 227

calcium oxide

Answer 228

calcium dioxide

Answer 229

dioxocarbon

Answer 230

the volume of air in a balloon

Answer 231

the amount of water in a glass

Answer 232

the amount of time in an hour

Answer 233

the number of eggs in an egg carton

Answer 234

none of the above

Answer 235

It is the shell of electrons in element V (atomic no. = 23)

Answer 236

It is the last partially filled orbital in an atom.

Answer 237

It is the shell of electrons in an atom that is the least reactive.

Answer 238

It is the same as the orbital configuration.

Answer 239

It is the outermost shell of electrons in an atom.

Answer 240

Protons contribute more to an atom's mass while electrons contribute more to its size.

Answer 241

Protons contribute more to both the mass and size of an atom.

Answer 242

Electrons contribute more to both the mass and size of an atom.

Answer 243

Electrons contribute more to an atom's mass while protons contribute more to its size.

Answer 244

charcoal being converted into ash

Answer 245

a candy bar being digested by a student

Answer 246

iron metal reacting with oxygen to form rust

Answer 247

water boiling and being converted into steam

Answer 248

water being electrolyzed and being converted in hydrogen and oxygen

Answer 249

It depends upon their diet.

Answer 250

An elderly person because they have been around much longer.

Answer 251

They are of the same age, which is appreciably older than the solar system.

Answer 252

A baby because this is surely a trick question.

Answer 253

physical; physical; physical; physical

Answer 254

conceptual; conceptual; conceptual; conceptual

Answer 255

physical; conceptual; physical; conceptual

Answer 256

conceptual; physical; conceptual physical

Answer 257

the metal shift

Answer 258

a group conscience

Answer 259

periodicity (periodic trend)

Answer 260

the family cycle

Answer 261

none of the above

Answer 262

cerium (Cr)

Answer 263

argon (Ar)

Answer 264

lithium (Li)

Answer 265

indium (In)

Answer 266

both A and C

Answer 267

Scientists have yet to make the precise measurements.

Answer 268

The atomic masses are average atomic masses.

Answer 269

Today's instruments are able to measure the atomic masses to many decimal places.

Answer 270

That would be too much of a coincidence.

Answer 271

have a change in flavor.

Answer 272

become radioactive.

Answer 273

become arsenic.

Answer 274

expand and likely lodge in your throat.

Answer 275

a mixture of atoms

Answer 276

a material that is made up of a combination of atoms bonded together

Answer 277

a mixture of more than one element

Answer 278

a material that is made up of a single type of atom

Answer 279

none of the above

Answer 280

alkaline-earth metals

Answer 281

noble gases

Answer 282

heavy metals

Answer 283

transition metals

Answer 284

alkali metals

Answer 285

flammability

Answer 286

oxygen sensitivity

Answer 287

reactivity towards acid

Answer 288

corrosion resistance

Answer 289

Energy can be converted into matter through nuclear quanta.

Answer 290

Light is composed of waves that exist only at certain quantum fundamental frequencies.

Answer 291

Energy is composed of subatomic particles called quanta.

Answer 292

Energy is a continuum, but light is quantized.

Answer 293

Energy comes in discrete packets of a certain minimum size.

Answer 294

It is more difficult to detect than a proton or an electron.

Answer 295

It is a nucleon.

Answer 296

It is often associated with protons.

Answer 297

It has a positive charge equivalent but opposite of an electron's.

Answer 298

It is much more massive than an electron.

Answer 299

rationality

Answer 300

both A and B

Answer 301

The nucleus of one atom attracts the nucleus of a neighboring atom to form a barrier.

Answer 302

The electrons on the atoms repel other electrons on other atoms when they get close.

Answer 303

The nucleus of one atom repels the nucleus of another atom when it gets close.

Answer 304

The electrons of one attract the nucleus of a neighboring atom to form a barrier.

Answer 305

An electron configuration is unique to each element, much like its atomic spectrum.

Answer 306

If the atom is electrically neutral, the number of electrons corresponds to the atom's atomic number.

Answer 307

The number of occupied shells corresponds to the atom's atomic number.

Answer 308

Using the periodic table, the outermost occupied shell indicates the group while the number of occupied shells indicates the period.

Answer 309

submicroscopic

Answer 310

microscopic

Answer 311

macroscopic

Answer 312

all of the above

Answer 313

none of the above

Answer 314

The neutron is nearly massless.

Answer 315

The discovery required the use of ultrafast computers.

Answer 316

The neutron is only slightly more massive than the proton.

Answer 317

The neutron lacks an electrical charge.

Answer 318

in group 2 of the periodic table.

Answer 319

soluble in water.

Answer 320

made of relatively large atoms.

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Exam 1

Beschreibung

Zusammenfassung der Ressource

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