Matter that has u____ and d______ proportion.
Elements: ____ form of matter that has unique set of properties; C, H, O etc
Can’t be broken down into ____ form by chemical reaction (__ __ __)
Compound: substance that contains two or more _____ chemically combined in _____ proportions; CO2, O2, H2O, NaCl, etc
What am I?
Uniform, definitive, simpliest, simpler, RXN, elements, fixed
Pure substance
____ blend of 2 or more pure substances are not _____ blended.
Not ____ MIXED REACTION!!!
Physical, Chemically^2
Mixture that is not _____ in composition H2O (L) example sand salad
A ____ and ____ of different things where you can easily ___ the different parts
What am I?
Uninformed, mix, match, see, heterogeneous mixture
Mixture that is _____ composition. Ex: H2O & sugar
A perfect smoothie where all ingredients are mixed so well that you can’t see them ______ and everything looks the ____ throughout. Also called a _____ it has components that are _____ distributed and won’t settle
What am I?
Uniformed, separately, same, solution, evenly, homogeneous
______ is the smallest particle of element that remains its _______ in ____ reaction
Atom, identity, chemical
_____ or condition of substance that can be _____ or measured without changing the substance composition. Ex: shape, color, odor, mass, V, density
A way to ___ a thing without changing it into something _____
What am I?
Quality, observed, describe, new, physical properties
Change during which composition of substance is not _____
Ex: vaporizatio, melting, boiling, freezing, ripping paper, condensation
When something changes it shape, size or state but remains the _____ substance meaning no new ______ is created
What am I?
Changed, same, material, physical changes
A_____ for substance to undergo _____ chemical _____
Ex: flam____, ability to o____, ability fo r___, ability to n_____
Describes how a substance interacts with other _____ and changes into completely ____ substance
What am I?
Ability, specific, change, flammability, oxidize, rust, neutralize, substance, different, chemical properties
Change in which R_____ Bonds are broken and new bonds are formed to make new product
Ex: c______, Rusting, o_____
All chemical ______ can be described by a chemical ______
What am I?
Hint: _____ ____ (____)
Reactant, combustion, oxidation, reactions, Equation, chemical changes (Reactions)
In chemical or ______ changes mass is c_______ ( m___ can’t be destroyed or created). But mass and e_____ can be converted into one ____
What law am I?
Physical, created, mass, energy, another, Law of Conservation
What are the measurements that describes the matter called
Quantitative/Qualitative
What kind of measurement is the description of matter; non numerically
Ex: color, texture, odor
Qualitative measurements
What is the measurements is the description of matter; number and units
Ex: 100.0g length, mass, V
Quantitative measurements
Closeness of measurement to true value or what is being measured
What am I?
Accuracy
the reproducibility of a result or measurement. In other words the closeness of two or more measurements to each other.
What am I?
Precision
Way to remember
Accurate is to = ______
Precision is to =______
Correct, Reproducibility (the ability to obtain consistent results when a study is repeated, using the same data and computational steps as the original)
What is sigfig for?
to indicate the precision of a number, reflecting the limitations of measurement tools and calculations
