Int. Science (Chemistry-Atoms-9Th)

Front 1

The word meaning middle or center is

Back 1

Nucleus

Front 2

2 atoms combine to form a

Back 2

Molecule

Front 3

The smallest whole unit of an element that still has the properties of that element is the

Back 3

Atom

Front 4

Atoms differ from one another because they have a different number of

Back 4

protons or diff. atomic number

Front 5

Bonding formed from electron transfer is called_______,and the resulting substance is called

Back 5

ionic bond


ionic compound

Front 6

Ionic bonding results in a lattice work formed from an attraction between______,That have different charges

Back 6

ions
-+-
+-+

Front 7

Covalent bonding results in a ______ being formed

Back 7

Molecule

Front 8

If and atom gives up electrons it becomes a___________ ________

Back 8

Positive ion

Front 9

If an atom gains electrons it becomes a

Back 9

Negative Ion

Front 10

Which one of the following is a poitive ion, which is a negative ion, which is a negative ion, which is neutral

Back 10

see pink sheet

Front 11

C6H1206 is called a chemical _________

Back 11

Formula or compound

Front 12

How many carbons are there in # 11

Back 12

Six

Front 13

The numbers you used to count the atoms are called ______________

Back 13

Subscripts

Front 14

2 Ca(PO4)2 Count the atoms in this formula

Back 14

2Ca 4P 16 O

Front 15

The small number two is called a __________

Back 15

Subscript.

Front 16

The large number two is called a _______________

Back 16

Coefficient

Front 17

all atoms prefer 8 electrons in their outer shell. this is called the

Back 17

Octet rule.

Front 18

2 elements prefer 2 electrons in their outer shell, they are_____ and ____

Back 18

He and H

Front 19

Horizontal rows in the periodic chart are called ___

Back 19

Periods

Front 20

Vertical columns are called

Back 20

Groups or Families

Front 21

As you go across the periodic chart, what is happening.

Back 21

Atomic # increases and Protons increase by 1.

Front 22

Name the following compounds

Back 22

CuCl2
Ag2S
MgBr2

Front 23

The molecules in # 21 are binary compounds. What does binary compound mean

Back 23

Two elements

Front 24

Draw a Bohr atom of Oxygen

Back 24

Look at 6P and IV

Front 25

Draw a lewis dot of Oxygen

Back 25

Ch4 Melecular formula

Front 26

What is a balanced equation

Back 26

Atoms on both sides of arrow are equal.

Front 27

Refer to your balancing equation worksheet and make sure you understand how to balance equations.

Back 27

See W. 3

Front 28

Define a neutral atom

Back 28

Same # of Protons in nucleus
Has no charge

Front 29

Define and inert atom

Back 29

Full shell on outside
Does not react.

Front 30

Which atoms are inert

Back 30

All of group 8 atoms
noble gases

Front 31

Write the symbol of potassium with the atomic number and atomic mass.

Back 31

39
K
19

Front 32

The number of electrons in the outer shell of an atom is called the ______________

Back 32

Valence

Front 33

How do you determine the number of valence electrons in an atom

Back 33

Look at the Group #

Front 34

When atoms gain, lose or share electrons with other atoms, they form chemcial____

Back 34

Bonds.

Front 35

Atoms form cheical bonds in order to satisfy the ____
rule.

Back 35

Octet

Front 36

O2 is an example of a molecule of an ______

Back 36

Element

Front 37

This is because the ____________________________

Back 37

ATOMS ARE THE SAME.
Diatonic molecules.O2,Br2
Cl2,F2,H2

Front 38

If you have an atomic number of 10, the number of electrons is ____ in a neutral atom.

Back 38

10

Front 39

If you have the 12 electrons, the number of protons is____ in the neutral atom.

Back 39

12

Front 40

If you have an atomic number of 15 and an atomic mass of 35, the number of neutrons is _____

Back 40

20

Front 41

What is an ion?

Back 41

Charged atom + or-

Front 42

If an atom has 20 protons, and has a charge of -1, then it mush have _____electrons.

Back 42

21

Front 43

What is an ionic Bond

Back 43

Force between 2 opposite ions + and -.

Front 44

If an atom has 18 portons in the nucleus and 17 electrons in its orbitals, it must have a charge of_______

Back 44

+1

Front 45

The starting substances in a reaction are called _______

Back 45

Reactants

Front 46

What you end up with in a reaction are called

Back 46

Products.

Front 47

Give four ways you can tell a chemical reaction is occurring.

Back 47

Color change -Temp. Change Bubbles of gas - Precipitate(solid)

Front 48

Wat does pricitate mean

Back 48

2 liquids --a solid

Front 49

What are the 4 phases of matter

Back 49

Plasma, gas, liquid, solid

Front 50

Draw a molecular formula for water

Back 50

H2O

Front 51

Draw a structural formula for water

Back 51

O
H H

Front 52

What additional information do you get in a structural formula.

Back 52

Where bonds are located

Front 53

Be able to write a word equation for any equation on your balancing worksheet

Back 53

See lead paint and Boggie lab

Front 54

Why are valence electrons important?

Back 54

Gives group # and they are involved in bonding.

Front 55

What determines which atom you have?

Back 55

Proton #

Front 56

What is the atomic mass of uranium

Back 56

238

Front 57

What is the atomic number or Arsenic?

Back 57

33

Front 58

What is the number of electrons in radon?

Back 58

86

Front 59

How many electrons in a ion of Potassium with a +1 charge

Back 59

K+1 draw this ion.

Front 60

How many electrons in an ion of oxygen with a -2 charge

Back 60

O -2

Front 61

A______________ is a substance that cannot be broken down into simpler substances.

Back 61

Element

Front 62

A__________ is the smallest particle of a matter having all that element's characteristics.

Back 62

atom

Front 63

The ______ is made up of protons and neutrons.

Back 63

Nucleus

Front 64

Small particles that have mass and positive electrical charges are_________.

Back 64

Protons

Front 65

Particles that have about the same mass as protons, but that are electrically neutral are_________

Back 65

neutrons.

Front 66

Surrounding the nucleus of an atom are tiny particles called_______

Back 66

Electron, which have little mass, but have negative electrical charges that are exactly the same magnitude as the + charges of protons

Front 67

The number of protons in an atom's nucleus is the

Back 67

Atomic Number

Front 68

When atoms of the sme element have different mass numbers, they are known as ___________ of that element

Back 68

Isotopes

Front 69

The spontaneous process through which unstable nuclei emit radiation is called

Back 69

radioactivity

Front 70

A__________ represents the area in an atom where an electron is most likely to be found.

Back 70

energy level

Front 71

The ourtermost electrons of an atom are called.

Back 71

valence electrons

Front 72

The combined number of protons and neutrons is the

Back 72

mass number

Front 73

The _______ is the average of the mass numbers of the isotopes of an element

Back 73

atomic mass