Wichtiger Wortschatz für Chemiker: Lerne jetzt die Grundlagen

Question 1

Which of the following is NOT used in a chemistry laboratory?

Accepted Answer

Calculator

Answer

Pipette

Answer

Bunsen burner

Answer

Test tube

Question 2

The breaking down of a compound into simpler substances is known as a:

Accepted Answer

Decomposition

Answer

Combustion

Answer

Synthesis

Answer

Oxidation

Question 3

The chemical element represented by the symbol 'Na' is:

Accepted Answer

Sodium

Answer

Nitrogen

Answer

Nickel

Answer

Neon

Question 4

The process of converting a liquid to a gas is called:

Accepted Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Answer

Deposition

Question 5

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Citric acid

Answer

Carbonic acid

Question 6

A neutral solution has a pH value of:

Accepted Answer

7

Answer

0

Answer

14

Answer

2

Question 7

Which of the following is a hydrocarbon?

Accepted Answer

Methane

Answer

Carbon dioxide

Answer

Water

Answer

Ammonia

Question 8

The method of identifying and separating the components of a mixture is called:

Accepted Answer

Chromatography

Answer

Distillation

Answer

Extraction

Answer

Titration

Question 9

Which laboratory tool is specifically designed to precisely measure small amounts of liquid?

Accepted Answer

Pipette

Answer

Burette

Answer

Volumetric flask

Answer

Measuring cylinder

Question 10

Welches deutsche Wort beschreibt den Begriff "catalyst"?

Accepted Answer

Katalysator

Answer

Reaktant

Answer

Produkt

Question 11

Which laboratory apparatus is used to measure the volume of liquids?

Accepted Answer

Graduated cylinder

Answer

Conical flask

Answer

Beaker

Answer

Pipette

Question 12

What is the term for a chemical reaction in which heat is released to the surroundings?

Accepted Answer

Exothermic reaction

Answer

Endothermic reaction

Answer

Neutralization reaction

Answer

Esterification reaction

Question 13

Which chemical symbol represents the element 'gold'?

Accepted Answer

Au

Answer

Fe

Answer

Ag

Answer

Cu

Question 14

What is the term for a chemical compound that makes a solution basic?

Accepted Answer

Base

Answer

Acid

Answer

Salt

Answer

Solvent

Question 15

What type of reaction occurs when an acid reacts with a metal?

Accepted Answer

Redox reaction

Answer

Neutralization reaction

Answer

Combustion reaction

Answer

Precipitation reaction

Question 16

Which hazard symbol indicates a substance is corrosive?

Accepted Answer

Exclamation mark

Answer

Skull and crossbones

Answer

Flame

Answer

Exploding bomb

Question 17

What is the main purpose of a burette?

Accepted Answer

To transfer liquids accurately

Answer

To measure the mass of a substance

Answer

To heat chemicals

Answer

To stir solutions

Question 18

When working with hazardous chemicals, which of these is a crucial safety measure?

Accepted Answer

Wearing proper protective gear

Answer

Working alone in the lab

Answer

Eating or drinking in the lab

Answer

Keeping chemicals in open containers

Question 19

Which functional group is a defining characteristic of alcohols?

Accepted Answer

Hydroxyl group (-OH)

Answer

Carbonyl group (-C=O)

Answer

Carboxyl group (-COOH)

Question 20

Translate the German term "Reagenzglas" into English.

Accepted Answer

Test tube

Answer

Vial

Answer

Beaker

Answer

Flask

Question 21

What is the primary purpose of a fume hood in a chemistry laboratory?

Accepted Answer

To remove hazardous fumes from the work area

Answer

To heat solutions at high temperatures

Answer

To store chemicals safely

Answer

To provide a controlled environment for experiments

Question 22

What is the chemical formula for water?

Accepted Answer

H2O

Answer

CH4

Answer

NaCl

Answer

CO2

Question 23

Which of the following is classified as a strong acid?

Accepted Answer

Hydrochloric acid (HCl)

Answer

Acetic acid (CH3COOH)

Answer

Phosphoric acid (H3PO4)

Answer

Carbonic acid (H2CO3)

Question 24

What is the pH of a neutral solution at room temperature?

Accepted Answer

7

Answer

10

Answer

14

Answer

0

Question 25

Which of the following elements is classified as a noble gas?

Accepted Answer

Helium (He)

Answer

Nitrogen (N2)

Answer

Oxygen (O2)

Answer

Chlorine (Cl2)

Question 26

What is the biological process by which plants use sunlight to convert carbon dioxide and water into glucose?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Fermentation

Question 27

Which of the following units is used to measure energy?

Accepted Answer

Joule (J)

Answer

Gram (g)

Answer

Meter (m)

Answer

Liter (L)

Question 28

What is the name of the element represented by the chemical symbol Fe?

Accepted Answer

Iron

Answer

Copper (Cu)

Answer

Aluminum (Al)

Answer

Gold (Au)

Question 29

Translate the glassware term "Erlenmeyerkolben" into English.

Accepted Answer

Erlenmeyer flask

Answer

Vial

Answer

Burette

Answer

Beaker

Question 30

What is the correct English translation for the term "chemische Reaktion"?

Accepted Answer

Chemical reaction

Answer

Chemical formula

Answer

Chemical equation

Answer

Chemical compound

Question 31

Which of the following is a crucial safety precaution when working with chemicals in the laboratory?

Accepted Answer

Wear appropriate protective gear

Answer

Eat and drink in the laboratory

Answer

Use equipment without proper training

Answer

Leave experiments unattended

Question 32

What is the English term for the laboratory equipment "Pipette"?

Accepted Answer

Pipette

Answer

Burette

Answer

Syringe

Question 33

Translate the laboratory glassware term "Reagenzglas" into English.

Accepted Answer

Test tube

Answer

Beaker

Answer

Flask

Answer

Petri dish

Question 34

What is the term used to describe a substance that accelerates a chemical reaction without being consumed?

Accepted Answer

Catalyst

Answer

Inhibitor

Answer

Product

Answer

Reactant

Question 35

Which of the following is a characteristic property of gases?

Accepted Answer

They expand to fill their container

Answer

They have a definite shape and volume

Answer

They are liquid at room temperature

Answer

They are highly reactive

Question 36

Which laboratory glassware is specifically designed for accurately measuring and transferring small volumes of liquids?

Accepted Answer

Pipette

Answer

Test tube

Answer

Erlenmeyer flask

Answer

Beaker

Question 37

In a chemical reaction, what is the term for a substance that accelerates the reaction rate without being consumed itself?

Accepted Answer

Catalyst

Answer

Inhibitor

Answer

Product

Answer

Reactant

Question 38

When working with potentially hazardous chemicals in a laboratory, which safety measure is of utmost importance?

Accepted Answer

Donning appropriate protective gear

Answer

Engaging in running within the laboratory

Answer

Operating equipment without proper training

Answer

Consuming food or beverages in the laboratory

Question 39

Which instrument is specifically used for measuring temperature?

Accepted Answer

Thermometer

Answer

Manometer

Answer

Barometer

Answer

Hydrometer

Question 40

In a chemical bond, when atoms share electrons, what type of bond is formed?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 41

What is the term for a homogeneous mixture with a uniform composition throughout?

Accepted Answer

Solution

Answer

Suspension

Answer

Colloid

Answer

Emulsion

Question 42

Which unit is used to express the amount of a substance in terms of the number of constituent particles?

Accepted Answer

Mole

Answer

Liter

Answer

Gram

Question 43

In a chemical reaction between an acid and a base, what is the name of the reaction that results in the formation of salt and water?

Accepted Answer

Neutralization reaction

Answer

Oxidation reaction

Answer

Combustion reaction

Answer

Reduction reaction

Question 44

What is the term for the physical change in which a liquid transforms into a gas?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Deposition

Answer

Sublimation

Question 45

Welches Laborgerät wird zur präzisen Messung von Flüssigkeiten verwendet?

Accepted Answer

Messzylinder

Answer

Reagenzglas

Answer

Pipette

Answer

Kolben

Question 46

Welche chemische Reaktion entsteht, wenn ein Metall mit einer Säure reagiert?

Accepted Answer

Salzerzeugung

Answer

Neutralisation

Answer

Oxidation

Answer

Verbrennung

Question 47

Welche Sicherheitsmaßnahme ist bei der Arbeit mit konzentrierten Säuren unerlässlich?

Accepted Answer

Schutzbrille tragen

Answer

Offene Flammen in der Nähe

Answer

Essen und Trinken im Labor

Answer

Kontaktlinsen tragen

Question 48

Welches Element hat die Ordnungszahl 17?

Accepted Answer

Chlor

Answer

Eisen

Answer

Argon

Answer

Natrium

Question 49

Welche SI-Einheit wird zur Angabe von Masse verwendet?

Accepted Answer

Kilogramm

Answer

Liter

Answer

Meter

Answer

Kelvin

Question 50

Welches Laborgerät dient zum Mischen und Erwärmen von Chemikalien?

Accepted Answer

Becherglas

Answer

Waage

Answer

Mikroskop

Answer

Bürette

Question 51

Welche chemische Verbindung wird bei der Herstellung von Glas verwendet?

Accepted Answer

Siliziumdioxid

Answer

Kalziumcarbonat

Answer

Natriumchlorid

Answer

Kupfersulfat

Question 52

Welche Art von Bindung entsteht zwischen einem Metall und einem Nichtmetall?

Accepted Answer

Ionenbindung

Answer

Kovalente Bindung

Answer

Metallische Bindung

Answer

Wasserstoffbrücke

Question 53

Welcher Begriff beschreibt einen Stoff, der sowohl Wasserstoff- als auch Hydroxidionen in Wasser freisetzt?

Accepted Answer

Amphoterer Stoff

Answer

Säure

Answer

Puffer

Answer

Neutrale Substanz

Question 54

Welche chemische Reaktion findet zwischen einer organischen Säure und einer Base statt?

Accepted Answer

Verseifung

Answer

Polymerisation

Answer

Neutralisation

Answer

Reduktion

Question 55

Which laboratory equipment is primarily used to separate solid particles from a liquid?

Accepted Answer

Filter paper

Answer

Burette

Answer

Graduated cylinder

Answer

Beaker

Question 56

What is the term for a chemical reaction that releases energy in the form of heat?

Accepted Answer

Exothermic

Answer

Combustion

Answer

Neutralization

Answer

Endothermic

Question 57

Which safety procedure is essential when handling hazardous chemicals?

Accepted Answer

Wear appropriate personal protective equipment (PPE)

Answer

Leave experiments unattended

Answer

Eat or drink in the laboratory

Answer

Use open flames near flammable materials

Question 58

What is the term for a substance that increases the rate of a chemical reaction without being consumed?

Accepted Answer

Catalyst

Answer

Inhibitor

Answer

Reactant

Answer

Product

Question 59

Which of the following is not a commonly used unit of measurement for volume?

Accepted Answer

Gram

Answer

Liter (L)

Answer

Milliliter (mL)

Answer

Cubic centimeter (cm³)

Question 60

What is the chemical symbol for the element sodium?

Accepted Answer

Na

Answer

SO2

Answer

H2O

Answer

NaCl

Question 61

Which type of chemical bond involves the sharing of electrons between atoms?

Accepted Answer

Covalent bond

Answer

Metallic bond

Answer

Hydrogen bond

Answer

Ionic bond

Question 62

What is the pH value of a neutral solution?

Accepted Answer

7

Answer

0

Answer

14

Answer

9

Question 63

Which of the following is a greenhouse gas that contributes to the Earth's warming?

Accepted Answer

Carbon dioxide (CO2)

Answer

Helium (He)

Answer

Nitrogen (N2)

Answer

Oxygen (O2)

Question 64

What is the chemical formula for the compound known as calcium hydroxide?

Accepted Answer

Ca(OH)2

Answer

CaO

Answer

CaCl2

Answer

CaSO4