Chemistry

Question 1

Matter

Answer 1

Anything that takes up space or mass

Question 2

Trace elements

Answer 2

elements that are required for life but are essential in small amounts

Question 3

Elements

Answer 3

Pure substances that cannot be broken down any further to simpler substances

Question 4

Compounds

Answer 4

Two or more elements that are chemically combined in a fixed ratio

Question 5

Atoms

Answer 5

The smallest unit of matter

Question 6

Neurons

Answer 6

Neutral charged subatomic particle found in the nucleus

Question 7

Protons

Answer 7

Positively charged subatomic particle found in the nucleus

Question 8

Electrons

Answer 8

Negatively charged subatomic particle found in the orbital

Question 9

Isotopes

Answer 9

atoms of the same element with the same number of protons but different number of neurons

Question 10

Radioactive Isotopes

Answer 10

Isotopes that decay faster and more spontaneously

Question 11

Energy

Answer 11

The capacity of change

Question 12

Potential energy

Answer 12

Stored energy due to position or structure

Question 13

Valence electrons

Answer 13

Electrons on the outermost shell

Question 14

Chemical bonds

Answer 14

Methods of connecting elements. Different types such a covalent bonding, ionic bonding, hydrogen bonding, van Der Waals bonding.

Question 15

Covalent bonding

Answer 15

The strongest one, deals with atoms sharing electrons

Question 16

Ionic bonding

Answer 16

one of the stronger ones, deals with atoms not sharing electrons (aka stealing)

Question 17

Hydrogen bonding

Answer 17

one of the weaker ones, deals with polarity and usually stems around hydrogen compounds

Question 18

Van der Waals

Answer 18

Individually weak, collectively strong, one of the weakest form of chemical bonds

Question 19

Nonpolar

Answer 19

a molecule with even charge distribution and no positive or negative ends

Question 20

Polar

Answer 20

Dealing with covalent bonding, its when molecules do not share, the more electronegative atom gets the electron

Question 21

Atoms valence

Answer 21

the amount of electrons of an atom needed to gain, lose, or share electrons to complete it’s octet

Question 22

Electronegativity

Answer 22

An atoms attraction for electrons in a covalent bond

Question 23

Ionic bonds

Answer 23

bonds between ions (charged atoms)

Question 24

What are the two types of ions

Answer 24

Cation - positively charged
Anion - negatively charged

Question 25

Chemical reaction

Answer 25

reactants make products

Question 26

Chemical equilibrium

Answer 26

When reactants and products can go back and forth without making a stop