chap1- matter

What is triatomic?

3 atoms

What is a chemical property?

A characteristic of a substance that describes its ability to change into different substances

What is a element?

A substance that cannot be broken down into simpler substances

Element: Al

Aluminum

Element: Xe

Xenon

Physical or chemical property? -cup of household bleach changes the color of your tshirt from purple to pink

chemical property

Physical or chemical property? -gold metal does not react with nitric acid

chemical property

Physical or chemical process? -bruning wood stick

chimical process

Physical or chemical process? -rusting of iron bridge

chimical process

Element: H

hydrogen (hydride)

True or False? -pure substances are seldom encountered in "everyday" world

true

What is a heterogeneous mixture?

visibly different phases

Element: Zn

Zinc

What is physical change?

change in physical change

Element: Li

lithium

What is a atom?

smallest basic unit of matter

What are the 3 physical states?

solid, liquid, gas

True or False? -both elements and compounds are pure substances

true

What is a chemical symbol?

A one or two letter representation of an element

what is matter?

Anything that has mass and takes up space

Element: Ba

Barium

Element: Cd

Cadmium

Element: Ca

Calcium

What is chemical change?

Changing of one substance into a new substance that has different properties

Element: Ga

Gallium

Element: I

Iodine (iodide)

Element: Kr

Krypton

Element: Pb

Lead

Element: Mg

Magnesium

Element: Mn

Manganese

Element: Hg

Mercury

Element: P

Phosphorus (phosphide)

Physical or chemical process? -melting ice

Physical process

Physical or chemical property? -mercury is a liquid at room temp

Physical property

Element: K

Potassium

Element: Na

Sodium

Element: Sr

Strontium

Element: S

Sulfur (sulfide)

What is a homoatomic molecule?

all atoms present are the same kind

Element: B

boron

What physical characteristic distinguishes gases from solids?

both volume and shape

Element: C

carbon (carbide)

Physical change, Physical property, chemical change,or chemical property? -process of burning piece of newspaper

chemical change

Physical change, Physical property, chemical change,or chemical property? -fact that hydrogen gas reacts with flourine gas

chemical property

Heterogeneous mixture, homogeneous mixture, compound, or element? -colorless gas that cannot be seperated into simpiler substances using physical means and that reacts with metal magnesium to produce both a magnesium oxygen compound and a magnesium nitrogen compound

compound

What is the physical state of a solid?

definite shape and definite volume

Substance A-D either element, compound, or not possible? -Substance A- canot be broken down to simplier substances by chemical means

element

What are pure substances?

elements and compounds- single matter that cannot be seperated

True or False? -compound results from physicalcombination of 2+ elements

false

True or False? -compounds, but not elements, can have variable composition

false

True or False? -order of matter to be heterogeneous, at least 2 compounds must be present

false

True or False? -substances maintain their identity in a heterogeneous mixture but not in homogeneous mixture

false

Element: Au

gold

What is a molecule?

group of 2+ atoms

Element: He

helium

Heterogeneous mixture, homogeneous mixture, compound, or element? -nonuniform, white crystalline substance, part of which dissolves in alcohol and another part that does not dissolve in alcohol

heterogeneous mixture

Heterogeneous mixture, homogeneous mixture, compound, or element? -blue-colored, single phase liquid when boiled away leaves behind a solid residue

homogeneous mixture

What is the physical state of a liquid?

indefinite shape and definite volume

Element: Fe

iron

Element: N

nitrogen (nitride)

What physical characteristic distinguishes the same for gases and solid states?

no common physical characteristics

Substance A-D either element, compound, or not possible? -Substance B- cannot be broken down simplier by physical means

not possible

Substance A-D either element, compound, or not possible? -Substance C-readily dissolves in water

not possible

Substance A-D either element, compound, or not possible? -Substance D- readily reacts with the element chlorine

not possible

What physical characteristic does copper wire have?

not take shape of container, definite volume

What is a homogenous mixture?

only one visibly distinct phase

Element: O

oxygen (oxide)

what are the 2 general types of property?

physical and chemical

Physical change, Physical property, chemical change,or chemical property? -process of sublimation of iodine

physical change

Physical or chemical change? -butter melts when put in sun

physical change

What physical characteristic does hydrogen gas have?

takes shape of container, definite volume

What is chemistry?

the study of matter and the changes it undergoes

How many elements have been discovered?

118

What is diatomic?

2 atoms

What is a compound?

2 or more elements chemically combined

What is a mixture?

A combination of two or more substances that are their own substances

Element: Ar

Argon

Element: Br

Bromine (bromide)

Element: Co

Cobalt

Element: Cu

Copper

Element: Pt

Platinum

What physical characteristic distinguishes solids from liquids?

Shape

Element: Si

Silicon

Element: Ag

Silver

Element: Sn

Tin

Element: F

flourine (flouride)

Heterogeneous mixture, homogeneous mixture, compound, or element? -cloudy liquid that seperates into 2 layers upon standing overnight

heterogeneous mixture

What is the best description of chocolate chip cookie?

heterogeneous mixture

What are the 2 types of mixtures?

homogeneous and heterogeneous

What physical characteristic does tap water have?

takes shape of container, definite volune

What is mass?

the amount of matter in an object

True or False? -Pure substances cannot have varibile composition

true

What is a heteratomic molecule?

where 2+ atoms are present

What is tetratomic?

4 atoms

What is pentatomic?

5 atoms

what is the physical state of a gas?

Indefinite shape and indefinite volume

Element: Ne

Neon

Element: Ti

Titanium

What is a physical property?

a characteristic that can be observed or measured without changing the identity of the substance

Element Be

beryllium

Physical or chemical change? -plants use carbon divoxide from air to make sugar

chemical change

Physical change, Physical property, chemical change,or chemical property? -fact that metallic copper reacts with chorine gas

chemical property

How are the number of elements shown?

subscript

Element: Cl

Chlorine (chloride)

Element: Cr

Chromium

Element: Ni

Nickel

True or False? -All heterogeneous mixtures must contain 3+ substances

False