Science by Kahoot! – Chemistry

Question 1

Phenylethylamine, a chemical that makes you feel "head over heels," is also found in what food?

strawberries licorice seafood chocolate

Question 2

Norepinephrine is a chemical released during attraction that may also cause ________.

blurred vision the palms to sweat sleepiness an increase in appetite

Question 3

Oxytocin is a hormone that has been given what nickname due to its effect on people in love?

The Reward Hormone The Connection Chemical The Cuddle Hormone The Happiness Hormone

Question 4

The basic substances of matter organized on the Periodic Table are known as ________.

atoms isotopes ions elements

Question 5

What Russian chemist first began to organize elements based on their atomic mass.

Dmitri Mendeleev Henry Moseley Ernest Rutherford Niels Bohr

Question 6

Which British scientist rearranged Mendeleev's table by using an element's atomic number?

John Dalton Henry Moseley Ernest Rutherford Niels Bohr

Question 7

This chemical element is atomic number 6 and is able to form covalent bonds.

Hydrogen Carbon Oxygen Sodium

Question 8

T/F: Every living thing on Earth contains Carbon.

True False

Question 9

What percentage of carbon makes up the human body?

less than 0.01 % 0.18 % 1.8 % 18 %

Question 10

When dissolved in water, what increases the number of negatively charged Hydroxide (OH-) ions?

a solution an acid a base a mixture

Question 11

When dissolved in water, what increases the number of positively charged Hydronium (H3O+) ions?

a solution an acid a base a mixture

Question 12

How do scientists measure how acidic or basic a solution is?

by determining its H2O by determining its OH- by determining its bH by determining its pH

Question 13

The term “atom” comes from the Greek philosopher named?

Aristotle Democritus Galileo Socrates

Question 14

Which of Dalton’s postulates incorporates the Law of Conservation of Mass?

All matter is composed of atoms Atoms from the same elements are identical. Atoms can be combined, separated, or rearranged. Atoms are indivisible.

Question 15

Oxygen and carbon always combine in a 1:2 mass ratio. This is an example of which law?

Law of Conservation of Mass Law of Definite Proportions Law of Definite Mass Law of Conservation of Proportions

Question 16

Which of Dalton’s postulates required revision?

Atoms are indivisible Atoms combine in whole number ratios. Atoms of one element differ from atoms of another element. Atoms can be combined, separated, or rearranged.

Question 17

Experiments with the cathode ray resulted in the discovery of?

Atoms Electrons Protons Neutrons

Question 18

Properties that describe how a substance looks, feels, state of matter, etc. are?

Chemical properties Physical properties

Question 19

Properties that describe how a substance reacts with other substances are called?

Chemical properties Physical properties

Question 20

What does a chemical change result in?

A phase change in the substance (ex. liquid to solid) A change in texture of the substance. A change in the way atoms are bonded to each other. A change in the way atoms are arranged in space.

Question 21

Which of the following is an example of a physical change?

Baking a birthday cake A glass falling and shattering on the floor Burning a piece of paper Baking soda and vinegar mixing together

Question 22

Which type of change is most often easily reversed?

Chemical Physical Both

Question 23

Any material consisting of only one type of atom is classified as what?

A compound An element A homogenous mixture A heterogenous mixture

Question 24

When different atoms combine in whole number ratios _______ are formed.

compounds elements homogeneous mixtures heterogeneous mixtures

Question 25

A compound is represented by its ________.

atomic number chemical formula number of protons number of atoms

Question 26

Most materials we use and encounter daily are ________.

Compounds Elements Mixtures Pure substances

Question 27

Which classification(s) of matter is(are) pure substances?

Elements Compounds Elements and compounds Elements and mixtures

Question 28

What does the atomic number identify?

The number of neutrons of a given atom. The number of protons of a given atom. The number of protons + neutrons of a given atom. The number of elections of a given atom.

Question 29

The number of protons + neutrons in an atomic nucleus is referred to as what?

Atomic number Mass number Isotope number

Question 30

Atoms of the same element with differing number of electrons are called ________.

elements isotopes ions

Question 31

Which subatomic particle is used to identify the atom, as it never changes?

Electron Proton Neutron

Question 32

How many neutrons are in the nucleus of the following atom:

47 61 108 155

Question 33

How are elements in the periodic table organized?

Alphabetically Based on physical and chemical properties Increasing number of electrons Most reactive to least reactive

Question 34

Most elements on the periodic table are classified as __________.

Gases Metalloids Metals Nonmetals

Question 35

Groups on the periodic table are arranged

Vertically Horizontally

Question 36

Which accurately describes nonmetals?

Poor conductors of electricity Often used in computer parts Both malleable and ductile Always solid at room temperature

Question 37

Which group on the periodic table is the most reactive?

Alkali metals Alkaline-earth metals Transition metals Halogens

Question 38

Which subatomic particle plays the greatest role in determining an atom’s chemical properties?

Electron Proton Neutron

Question 39

Half the distance between the nuclei of two like atoms is called what?

atomic distance atomic radius atomic diameter atomic space

Question 40

How does atomic size change as you move down a group on the periodic table?

decreases increases stays the same

Question 41

Which of the following atoms has the lowest electronegativity?

Oxygen Lithium Neon

Question 42

Which of the following atoms would have the highest ionization energy?

Francium Zinc Tin Chlorine

Science by Kahoot! – Chemistry

Chemistry of Love

Chemistry: Periodic Table Review

Chemistry: All about Carbon

Chemistry: Determining pH

Chemistry: Atomic Structure

Chemistry: Chemical and Physical Changes

Chemistry: Classifying Matter

Chemistry: Isotopes and Ions

Chemistry: Periodic Table

Chemistry: Periodic Trends

Science by Kahoot! – Chemistry

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