Mometrix Test Prep

Question 1

What is Electrophoresis?

Answer 1

The separation of molecules based on electrical charge

Question 2

What is a Calorimetry?

Answer 2

Used to determine the heat released or absorbed in a chemical reaction

Question 3

What is a Tiration?

Answer 3

Helps determine the precise endpoint of a reaction

Question 4

What is Chromatography?

Answer 4

Refers to a set of laboratory techniques used to separate or analyze mixtures

Question 5

What does ampere (A) measure?

Answer 5

Electric current

Question 6

What does kelvin (K) measure?

Answer 6

thermodynamic temperature

Question 7

What does mole (mol) measure?

Answer 7

the amount of a substance at a molecular level

Question 8

What are histones?

Answer 8

Proteins that help package DNA more efficiently by wrapping around it, shortening the overall strand

Question 9

What is allopatric speciation?

Answer 9

Occurs with geographic isolation where one population is split into two

Question 10

What is sympatric speciation?

Answer 10

Occurs when there is no geographical isolation but rather behavioral isolations

Question 11

What is peripatric speciation?

Answer 11

Occurs when one species is spread out over a large area

Question 12

What is artificial speciation?

Answer 12

Occurs when humans cause a new species to develop

Question 13

What is an independent variable?

Answer 13

The variable that you change in an experiment on purpose.

Question 14

What is a dependent variable?

Answer 14

The variable that is influenced by the independent variable, the results of your experiment

Question 15

Where do you look to take a volume reading of a liquid in a graduated cylinder?

Answer 15

The bottom of the meniscus

Question 16

What is viscosity?

Answer 16

The resistance to flow

Question 17

What is an isotope?

Answer 17

Atoms of the same element that have a different number of neutrons

Question 18

How many known elements are there?

Answer 18

118

Question 19

What do two or more atoms combine to form?

Answer 19

A molecular compound

Question 20

What is the atomic mass of an atom?

Answer 20

The atomic mass is the combined protons and neutrons and the average mass of the element

Question 21

What is a chemical bond?

Answer 21

When atoms share electrons

Question 22

Why do atoms bond?

Answer 22

They bond so electrons can pair up and become more stable

Question 23

What is velocity?

Answer 23

speed that includes direction

Question 24

What is newton’s first law of motion?

Answer 24

An object in motion will remain in motion and an object at rest will remain at rest unless there is a net force acting upon it

Question 25

What is newton’s second law of motion?

Answer 25

The acceleration of an object is equal to the net force on an object divided by the mass of the object

Question 26

What is newton’s third law of motion?

Answer 26

Forces act in pairs; for every action, there is an equal but opposite reaction