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Matter Test
| Question | Answer | ||
|---|---|---|---|
| __________is defined as how much matter an object is made of. | Mass | ||
| _________is how much space an object takes up. | Volume | ||
| A __________ _________ is any matter that has its own unique physical and chemical properties. | pure substance | ||
| _________properties are those that can be identified without altering the identity of the substance. | physical | ||
| _________properties is any property that produces a change in the composition of the matter. | chemical | ||
| A _______change occurs when the identity is not altered. | physical | ||
| A _________change occurs when a substance reacts and forms a new substance. | chemical | ||
| _________properties are independent of the amount---color, texture,density | intensive | ||
| ______properties are dependent on the amount---mass, volume | extensive | ||
| List 2 examples of pure substances | element | compound | |
| An _________ is any substance that cannot be broken down into simpler substances | element | ||
| A ________is two or more atoms chemically combined in a fixed ratio | compound | ||
| A _________ is a combination of two or more substances physically combined in any ratio. | mixture | ||
| A ________mixture is where the parts of the mixtures are noticeably different throughout. | heterogeneous | ||
| A _______mixture is where the substances are evenly distributed and it looks the same throughout. | homogeneous | ||
| A ______ is a homogeneous mixture where one substance is dissolved in another. | solution | ||
| The _____ is the substance being dissolved and the _______does the dissolving | solute | solvent | |
| _______is the universal solvent | water | ||
| ________is the separation technique that separates materials based on the relative size of the particles Ex- sand in water | filtering | ||
| ________is the separation technique that is used to separate a mixture of two or more liquids and uses their individual boiling points to separate them | distillation | ||
| _________involves a sample being dissolved into a mobile phase and allowed to travel through a stationary phase | chromatography | ||
| Who was the first person to state that matter was made of indivisible particles he called "atomos" or atoms | Democratis | ||
| ________discovered the electron | JJ Thomson | ||
| Who discovered the positively charged particle the proton and that they are concentrated in the very center of the atom--nucleus | Rutherford | ||
| Who discovered the neutron | Chadwick | ||
| An _______ are atoms of the same element that differ in the number of neutrons | isotopes | ||
| ________gave us the planetary model of the atom. He stated that the electrons traveled well defined paths around the nucleus (orbitals)depending on the amount of energy they have | Bohr | ||
| what is the modern model of the atom that we use today | electron cloud model | ||
| The _____ number is the unique number that equals the number of protons in the nucleus in an atom of that element | atomic | ||
| The _____ mass is the weighted average of all naturally occurring isotopes | atomic | ||
| The ______ number is the atomic mass rounded to a whole number and indicates the number of protons and neutrons in the nucleus of an atom of the element | mass | ||
| Who is given credit for creating the periodic table? | Mendeleev | ||
| Columns are also called _____ or _______ | groups | families | |
| Rows are also called______ | periods | ||
| The period number tells you what? | How many valence electrons | ||
| Give the family name for the following group number | 1. Alkali Metals 2. Alkali Earth Metals 17. Halogens 18. Noble Gases | ||
| What family includes the most reactive metals? | Alkali metals | ||
| What family includes the most reactive nonmetals | Halogens | ||
| Waht family includes the stable nonreactive inert gases? | Noble Gases | ||
| List the 7 metalloids | Boron, Silicon, Germanium, Arsenic, Selenium, Antimony, Tellurnium | ||
| List the four characteristics of a metal | lustrous, ductile, malleable, good conductors of heat | ||
| What two elements on the periodic table are liquids at room temperature | Mercury | Bromine | |
| In the Bohr model, how many valence electrons can each level hold? | First- 2 Second- 8 Third- 18 Fourth- 32 | ||
| _________ electrons are the ones in the outermost energy level | Valence | ||
| A Lewis Dot Diagram can have no more than ____ dots to represent valence electrons | 8 | ||
| The _____rule states that atom are stable with 8 valence electrons | octet | ||
| List two exceptions to this rule | Hydrogen | Helium | |
| List the 11 elements that are gases at room temperature | hydrogen, helium, neon, Argo, krypton, xenon, chlorine, fluorine, bromine, nitrogen, oxygen | ||
| _________ is anything that has mass and takes up space. | Matter | ||
| List the three subatomic particles and give their charge and location | protons- positive charge- nucleus | neutrons- neutral charge- nucleus | electrons-negative charge-orbitals |
Created by:
aemiller
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