Module 4 - Classifying Matter

Question 1

How many states of matter are there?

Answer 1

There are four states of matter.

Question 2

What are the four states of matter?

Answer 2

Solid, liquid, gas, and plasma.

Question 3

Matter that explains the motions of particles and how matter can transition from one state to another.

Answer 3

Kinetic Molecular Theory

Question 4

Matter in which all particles are the same. The particles can be either atoms or molecules

Answer 4

Pure Substance

Question 5

Two types of pure substances

Answer 5

Elements and compounds

Question 6

Matter that is made up of only one type of atom.

Answer 6

Element

Question 7

Pure substance made of atoms of two or more elements that are chemically bonded together.

Answer 7

Compound

Question 8

Unevenly mixed materials

Answer 8

Heterogenous Mixtures

Question 9

Evenly mixed mixture

Answer 9

Homogeneous mixture

Question 10

Heterogeneous mixtures

Answer 10

Unevenly mixed materials

Question 11

Homogeneous Mixture

Answer 11

Evenly Mixed Mixture

Question 12

Particles are large enough to settle to the bottom or float to the top, and they can be separated with a filter.

Answer 12

Suspension

Question 13

The particles remain suspended indefinitely and cannot be be removed with a filter.

Answer 13

Colloid

Question 14

Two basic types of properties used to describe matter:

Answer 14

Physical properties and chemical properties

Question 15

Characteristics of a substance that can be measured without changing the identity of the substance.

Answer 15

Physical Properties

Question 16

Characteristics of a substance that describe the ways it can react to form new materials. Chemical properties cannot be measured or studied without changing he composition of the substance.

Answer 16

Chemical Properties

Question 17

The collective knowledge that for most of human history, many scientists have added to our understanding of atoms.

Answer 17

Modern Atomic Theory

Question 18

Subatomic Particles:

Answer 18

Protons(positive), neutrons(neutral), electrons(negative).

Question 19

A very large particle made up of two protons and two neutrons; very large and has a strong positive charge.

Answer 19

Alpha Particle

Question 20

Atomic Number

Answer 20

Number of protons in an atom.

Question 21

Special electrons that form bonds with other atoms; furthest away from the nucleus; determine all chemical and physical properties of an element.

Answer 21

Valence Electrons

Question 22

Referred to as an atom with a specific number of neutrons.

Answer 22

Isotopes

Question 23

An atom’s ability to attract electrons and form chemical bonds. The greater the electronegative try, the greater the ability of an atom to bond with another atom.

Answer 23

Electronegative to

Question 24

A chemical bond that forms between ions with opposite charges.

Answer 24

Ionic Bond

Question 25

A bond that forms by atoms sharing electrons. The shared electrons are attracted to the nuclei of both atoms in the bond.

Answer 25

Covalent Bonds

Question 26

Atoms that bond covalently form:

Answer 26

Covalent Compounds; molecular compounds

Question 27

Element that is made up of one oxygen atom and two hydrogen atoms; 6 valence electrons

Answer 27

Water - H2O

Question 28

Element that can bond with hydrogen, phosphorus, oxygen, and nitrogen.

Answer 28

Carbon

Question 29

A compound that increases the concentration of hydrogen ions when dissolved in water.

Answer 29

Acid

Question 30

A compound that increases the concentration of hydroxide ions when dissolved in water.

Answer 30

Base

Question 31

This type of reaction happens when energy is released, causing the temperature of the solution to rise.

Answer 31

Exothermic Reactions

Question 32

Ions present in a basic solution.

Answer 32

Hydroxide Ions

Question 33

Measure of the concentration of hydrogen ions in a solution of an acid or base.

Answer 33

pH

Question 34

pH of water:

Answer 34

7 - neutral