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Science > Unit 2 Chemistry Test > Flashcards

Unit 2 Chemistry Test Flashcards

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1
Q

What is matter?

A

Matter is anything that occupies space

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2
Q

What is a Pure substance?

A

made up of only one kind of matter and has a unique
set of properties. They can be elements or compounds

ex.gold,sliver

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3
Q

What is a mixture?

A

matter that contains more than one type of particle

ex.salad dressing

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4
Q

What is an element?

A

a pure substance that cannot be broken down by any physical or chemical means into simpler substances

ex. soduim

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5
Q

What is a compund

A

two or more elements chemically bonded together.

(ex.
sodium chloride – NaCl, methane – CH 4 )

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6
Q

What is malleability?

A

is the ability of a substance, usallys metals to be deformed or molded to different shapes

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7
Q

What is Viscocity?

A

resistance of a fluid

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8
Q

What is soluability?

A

a degree of which a substance dissloves in a slovent

ex. sugar and water can be recovered

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9
Q

What is density?

A

is the amount of matter per unit volume

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10
Q

What is conductivity?

A

power of conducting heat, electricity, or sound

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11
Q

What is a proton?

A

a particle with a positive electric charge and found in the nucleoous

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12
Q

What is a neutron?

A

a particle that is in the nucleous and has no charge

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13
Q

what is an electron?

A

it is a particle outside the nucleous and has a negative charge

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14
Q

What is an isotope?

A

isotopes are a type of atom, the smallest unit of matter that retains all the chemical

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15
Q

What is an inoic bond?

A

which one atom loses valence electrons and gains them from another

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16
Q

What is an colvent bond?

A

when electrons are shared between two atoms

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17
Q

What is a molecular compond?

A

compounds held together by covalent bonds

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18
Q

What is a Diatomic element?

A

There are 7. hydrogen (H), nitrogen (N), oxygen (O), fluorine (F), chlorine (Cl), bromine (Br), and iodine (I)

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19
Q

What is the different between a pure substance and a mixture?

A

A pure substance has one particles while the mixture has more than one type

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20
Q

What is the difference between an element and a compound?

A

An element has one type of atom while compund are formed of two or more different element.

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21
Q

What is the 5 things in particle theorie?

A
  • all matter is made up of tiny particles
  • each pure substances has its own type of particle
  • particle attract eachother
  • always moving
  • particles at a higher tempature move faster than ones at a colder tempature
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22
Q

What are the states of matter?

A
  • solid
  • liquid
  • gas
23
Q

What is the different between qualitative and quantitated?

A

Qualitative are descriptive and quantitative are measured.

24
Q

What is Homogeneous mixtures?

A

are solutions and have a uniform
composition.

ex.kool aid

25
Q

what is Heterogeneous mixtures:?

A

different parts of the mixture are visible

ex. salad dressing

26
Q

Different physical properties?

A
  • colour
  • taste
  • texture
  • odour
27
Q

What does it mean when something is insouluble?

A

incapable of being dissolved in a liquid and especially water.

28
Q

Different chemical properties?

A

reactivity:
-water
- acid
- another pure substance
- oxygene

29
Q

What is Daltons model of an atoms?

A

It stated that all matter was made up of small, indivisible particles known as ‘atoms’.

30
Q

What is the gold foil experiment?

A

A piece of gold foil was hit with alpha particles, which have a positive charge. Most alpha particles went right through. This showed that the gold atoms were mostly empty space.

31
Q

What makes up the nucleous?

A

protons, which are positively charged, and neutrons, which are electrically neutral.

32
Q

What

What are 3 trends in the periodic table?

A
  • As you go from right to left along a row, the number of electrons increases by one.
  • As you go down a column, the number of “shells” increases by one.
    All of the elements in the same column, have the same number of electrons in their outermost shell
33
Q

Determine what gas is produced in a chemical reaction using a splint test

A

When a burning splint is introduced to a sample of pure hydrogen gas, it will burn with a popping sound.

34
Q

What is the different between a period and a group?

A

A period is a horizontal row of the periodic table and a group is the vertical coloums

35
Q

What are the properties of an ionic compound?

A
  • Metal& non metal
  • ionic bond
  • good conductor
  • soluble(dissolves better
36
Q

What are the properties of a molecular?

A
  • 2 non metals
  • covenlent(shares electrons)
  • poor conductor
  • non soluable
37
Q

Name 2 ionic compounds and how to draw them?

A
  • Soduim Cholride- NaCl
  • tetrapotassium mononitride- K3N
38
Q

Name 2 Molecular Compounds and how to draw them?

A
  • Carbon dixoxide CO2
  • Disulfur dioxide S2O2
39
Q

what is Tompson model of an atom?

A

All atoms contain tiny negatively charged subatomic particles or electrons.

40
Q

What is Rutherford model of the atom?

A

An atom consists of positively charged particles concentrated at the center known as the nucleus.

41
Q

What is Borh’s model of the atom?

A

The electrons encircle the nucleus of the atom in specific allowable paths called orbits

42
Q

Correctly write the number of atoms in Berylium phosphide?

A

Be3P2

43
Q

Correctly write the number of atoms in Sodium Oxide?

A

Na2O

44
Q

Correctly write the number of atoms in Litium Cholride?

A

LiCl

45
Q

Correctly write the number of atoms in Potassium bromide?

A

KBr

46
Q

Correctly write the number of atoms in Magnesium sulfide?

make sure to simplify if possible

A

MgS

47
Q

Look at a chart!!!!

A
48
Q

Draw Carbon hydride?

A

look on lesson 10

49
Q

Draw Hydrogen Oxide?

A

Answer on page

50
Q

Sulfur and hydride?

A

Answer on page

51
Q

Name the molecular molecules:
-CO
-CO2
-NH3
-H2O
-OCl2

A

on page

52
Q

Write out:
- Nitrogen monoxide
- Carbon tetrahydride
- Silicon tetrabromide
- Boron trihydride

A
  • NO
  • Ch4
  • NO5
  • SBr4
  • BH3
53
Q

Write the formulas for:
- Lithium Flurorine
- Sodium nitrogen
- cacluicm bromine
- aluminum nitrogen

A
  • LiF(litium and floride)
  • CaBr2(Calicum bromide)
  • Na3N(sodium Nitride)
  • AlN(Aluminum Nitride)
54
Q

5

Write the formulas:
- Sodium Iodide
- Beryllium floride
- Magnesium Oxide
- Berylium fluoride
- Alumimum sulfide

A
  • NaI
  • BeF2
  • MgO
  • Al2S3

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