Physical-Earth Final Exam

How are science and technology related?

Science and technology are related because advances in science can lead to advances in technology and vice versa.

In which step of the scientific method is information obtained through the senses?

During the observation stage, you use your senses to obtain information.

What is a statement that summarizes a pattern found in nature

law

What is the most important safety rule?

The most important rule is to follow your teacher’s directions and follow them exactly.

The type of graph used to show how a part of something relates to the whole is..

circle graph

• How do scientists who speak different languages make their data understandable to one another?

They all use the SI units of measurements.

A substance that is made up of only one kind of atom is a(an)

element

Water is a compound because it

made out of two simpler substances(hydrogen-oxygen) and can be broken down into those substances.

endothermic changes

Melting, Vaporation, Sublimation

exothermic changes

Freezing, Condensation, Deposition

According to John Dalton’s observations, when elements combine in a compound,

they always combine in the same way.

The glowing of a neon light is caused by electrons emitting energy as they

move from lower to higher energy levels.

The unit for atomic mass (amu) is

one twelfth the mass of a carbon-12 atom.

A member of the boron family has three valence electrons, while a member of the nitrogen family

5 valence electrons

Which of the following Group 7A elements Halogens is the most reactive?

Fluorine

Among the alkali metals, the tendency to react with other substances

decreases from top to bottom.

Which element is found in nature only in compounds?

Sodium

Which element is found in most of the compounds in your body except for water?

Carbon

Noble gases

argon, helium, krypton, neon, radon, and xenon

Ionization energies tend to increase from

from left to right across the periodic table

Which of the following statements correctly describes the substance with the formula KI?

There is a 1:1 ration of potassium cations to iodide anions.

Metallic bonding is similar to ionic bonding because

they have high melting and boiling points, because their electrons and positive ions have strong attractions.