Lesson 2

Question 1

Chemistry

Answer 1

The study of matter 🪔

Question 2

Atoms

Answer 2

Atoms are the building blocks of elements ⚛

Question 3

Protons

Answer 3

Positive charge 😃

Question 4

Neutrons

Answer 4

Neutral charge

Question 5

Electrons

Answer 5

Negative charge ☹

Question 6

Valence shell

Answer 6

The outermost shell in an atom

Question 7

Valence electrons

Answer 7

The electrons in the valence shell

Question 8

Octet rule

Answer 8

Most elements are most stable with 8 electrons in their valence shell

Question 9

Ion

Answer 9

An atom with a positive or negative charge

Question 10

Iconic bond

Answer 10

The force connecting a positively charged atom with a negatively charged one 😃+☹

Question 11

Covalent bond

Answer 11

The force between 2 or more atoms sharing electrons in their valence shells

Question 12

Polar bonding

Answer 12

The force between 2 elements on a polar molecule

Question 13

Non-polar bonding

Answer 13

When the electrons are evenly distributed among atoms in a molecule

Question 14

Chemical reaction

Answer 14

When atoms come together to make a molecule or when a molecule breaks up into separate atoms. 🔥

Question 15

Reactants

Answer 15

The atoms that come together to form a molecule in a chemical reaction

Question 16

Product

Answer 16

A molecule that results from reactants coming together

Question 17

1sr law of thermodynamics

Answer 17

Matter can neither be created or destroyed

Question 18

2nd law of thermodynamics

Answer 18

Entropy everything wears out and falls apart

Question 19

The building blocks of life

Answer 19

Carbohydrates, lipids, proteins, nucleic acids

Question 20

Carbohydrates

Answer 20

Give energy to living cells

Question 21

Lipids

Answer 21

Used for energy, insulation, and protection

Question 22

Proteins

Answer 22

Made from amino acids

Question 23

Nucleic acids

Answer 23

Found in the nucleus of the cell

Example: DNA, RNA