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Language Arts > CHEMISTRY > Flashcards

CHEMISTRY Flashcards

learn all vocabulary!

1
Q

Element

A

A sample of matter made of only one kind of atom. The number of protons determines the identity of the element

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2
Q

Atomic #

A

This tells the number of protons in the nucleus of each atom. The Periodic Table organizes elements based on their atomic number (# of protons)

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3
Q

Atomic Mass

A

Tells the mass of an atom

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4
Q

Which parts of an atom have a significant mass

A

Protons and neutrons

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5
Q

Protons: mass, charge, location?

A

Mass- 1 amu
Charge- positive
Location- nucleus

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6
Q

Neutrons: mass, charge, location?

A

Mass- 1 amu
Charge- Neutral
Location- nucleus

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7
Q

Electrons: Mass, Charge, Location?

A

Mass- 0 amu
Charge- negative
Location- electron cloud

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8
Q

Will A neutral atom will have an equal number of protons and electrons?

A

YES! A neutral atom will have an equal number of protons and electrons

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9
Q

Chemical Symbols

A

Abbreviations for elements on Periods Table. Each element in the Periodic Table is represented by a chemical symbol.

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10
Q

Elements groups/families

A

The columns (vertical) on the Periodic Table are called GROUPS or FAMILIES. Elements in the same group or column share chemical properties.

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11
Q

Element periods

A

The rows (horizontal) on the Periodic Table are called periods.

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12
Q

Define Isotope

A

(Isotope means “same place”) Atoms of the same element that have different numbers of neutrons.

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13
Q

Average Atomic Mass

A

The decimal you see on the periodic table is the WEIGHTED AVERAGE of the mass of all of an element’s isotopes. Tells you which isotope is the most common on Earth.

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14
Q

Malleable and ductile (can be bent and shaped)

Good conductors of heat and electricity

Solid at room temperature (except mercury)

Most elements are metals

Shiny

Left side of the Periodic Table

Example: Gold, Iron

A

METALS

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15
Q

Dull metals (not shiny)

Poor conductor of heat and electricity

At room temp they are either gases or brittle solids (all 3 forms at room temp)

Right side of Periodic Table

Essential to the chemistry of life (97% of your body)

Example: Hydrogen, Oxygen, Carbon, Nitrogen

A

NON METALS

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16
Q

All solids at room temp

Have characteristics of both metals and non-metals

Semiconductors

Used in electronic devices

Make up the stair-step line of the periodic table (between the metals and non-metals)

Example: Silicon, Boron

A

METALLOIDS (6)

17
Q

Metalloids

A

All solids at room temp

Have characteristics of both metals and non-metals

Semiconductors

Used in electronic devices

Make up the stair-step line of the periodic table (between the metals and non-metals)

Example: Silicon, Boron

18
Q

NON METALS

A

Dull metals (not shiny)

Poor conductor of heat and electricity

At room temp they are either gases or brittle solids (all 3 forms at room temp)

Right side of Periodic Table

Essential to the chemistry of life (97% of your body)

Example: Hydrogen, Oxygen, Carbon, Nitrogen

19
Q

Metals

A

Malleable and ductile (can be bent and shaped)

Good conductors of heat and electricity

Solid at room temperature (except mercury)

Most elements are metals

Shiny

Left side of the Periodic Table

Example: Gold, Iron

20
Q

STUDY PARTS OF ATOMS

A
21
Q

average atomic mass

A

weighted average mass of an element

22
Q

States that matter cant be created nor destroyed, only changed

A

law of conservation of energy

23
Q

Negatively charged particle

A

electron

24
Q

positively charged Center

A

nucleus

25
Q

elements that have shiny or metal luster

A

metals

26
Q

made up of one kind of matter

A

elements

27
Q

Atoms of same element that have different numbers of neutrons

A

ISOTOPES

28
Q

The sum of a atoms protons and neutrons

A

Atomic mass #

29
Q

A ___ is a particle in an atom with a positive charge

A

Proton

30
Q

Each of these are matter except for ________

A

a beam of light

31
Q

Atomic # of an element tells # of ____

A

PROTONS, NOT NEUTRONS!

32
Q

Isotopes of an element contain different numbers of _____

A

NEUTRONS

33
Q

Most elements found on the LEFT are

A

Metals

34
Q

Metalloids go:

A

staircase between Metals and Non Metals

35
Q

Rutherford’s Experiment, list parts

A
  1. Atom contains positively charged nucleus
    2.

Language Arts (7 decks)

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