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| There are two properties of matter that are "necessary and sufficient". This means that everything that can be clasified as "matter" has these properties. These two properties are______ and ______ |
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| Volume is [different from/ the same as] surface area. |
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| when you combine 100ml and alcohol with 50 ml of water, the mixture's total volume will be [50ml / 100ml / 150ml / something else] |
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| when volumes of liquids are combined the total volume [is/is not] equal to the sum of the individual volumes. give evidence that supports your answer |
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| is not. 50ml alchohol + 50ml water = slightly less than 100ml of solution |
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| At Everyday temperatures, matter exists in three states. What are they? |
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| If you have 75g of ice and you add heat until it is all liquid the waters mass will be [less than 75g/ 75g/ more than 75g / unpredictable]. |
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| mass [is / is not] conserved in physical changes. |
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| the process of matter changing from liquid to solid. |
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| ______ is the process of matter changing from solid to liquid |
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| the process of matter changing from solid to gas (hint: SublimatinG. starts with S and ends with G; S to G) |
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| ______ is the process of matter changing from liquid to vapor |
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| the density [does/ does not] change when you measure 100ml of the substance or you measure 75ml up of the substance. Explain your answer citing evidence. |
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| Does not. Since D = M/V If you have more mass you also have more volume. eg ( for salt water the value of the fraction) 1.1/1 2.2/2 3.3/3 ...etc. |
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| density [determines / does not determine] whether and objects sinks or floats. Cite evidence to support your answer. |
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Determines. If the object is more dense than the liquid, the object will sink. (eg. Reg Pepsi in H20)
if an object is less than the liquid, the object will float. (eg. diet pepsi in H2O) |
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| A very viscous liguid is [always / not always] very dense. Cite evidence to support your answer. |
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Not always. vegetable oil was very thick and slow to run downhill. (more viscous)
water was runny and quick to run downhill. (less viscous)
But the density of oil was less than the density of water. Oil = .99 g/ml Water = 1.0 g/ml |
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| Viscosity is a measure of... |
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| thickness; resistance to flowing |
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| Materials that are non-uniform in appearance are.. |
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| Materials that are uniform in appearance may be either ______ or _________ |
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| mixtures generally retain most of the characteristic properties of the individual components. These components can be separated by physical means, such as... |
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| sifting, filtering, or boiling. |
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| _________ changes and __________ changes Okra at different rates. The rate depends on factors such as________, __________, __________, and _________ |
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| starring/mixing, particle size, temperature, and concentration. |
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| A(n) _________ is a substance made of only one kind of particle. |
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| A(n) _____________ Is a substance made of two or more kinds of particles. |
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| In a(n) ____________ Change, particles of compounds remain intact and do not split apart. |
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| In a(n) ________ change, different kinds of particles interact with each other. The compounds split apart and form new combinations of particles. The resulting products have new characteristic properties. |
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| Study page 7 pictures/graphs |
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| Study page 8 pictures the |
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| gravel is a [pure substance / homogeneous mixture / heterogeneous mixture] |
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| Water is a [pure substance / homogeneous mixture / heterogeneous mixture] |
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| Brass is a [pure substance / homogeneous mixture / heterogeneous mixture] |
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| iron is a [pure substance / homogeneous mixture / heterogeneous mixture] |
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| salt is a [pure substance / homogeneous mixture / heterogeneous mixture] |
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| Know how to use page 10 lab equipment |
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| Study page 11 graph/pictures |
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| brass( a blend of copper and zinc) is a: homogeneous/ heterogeneous mixture |
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| salad is a [homogeneous/heterogeneous] mixture |
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| black coffee is a [ homogeneous/ heterogeneous] mixture. |
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| Air is a [ homogeneous/ heterogeneous] mixture. |
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| blood is a [ homogeneous/ heterogeneous] mixture. |
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| Silver is a [element / mixture] |
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| iced tea is a [element / mixture] |
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| a pine tree is a [element / mixture] |
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| carbon is a [element / mixture] |
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| orange juice is a [element / mixture] |
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| soup is a [element / mixture] |
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| what is the difference between a heterogeneous and a homogeneous mixture? |
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heterogeneous -- you can see your naked eyes that there's more than one type of substance.
Homogeneous -- you cannot see any different colors/textures with just your naked eyes. |
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| Salt water is a [compound / homogeneous mixture / heterogeneous mixture / element] |
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| dry soup mix is a [compound / homogeneous mixture / heterogeneous mixture / element] |
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| salad dressing is a [compound / homogeneous mixture / heterogeneous mixture / element] |
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| heterogeneous mixture or homogeneous mixture ( it depends on the type) |
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| carbon dioxide is a [compound / homogeneous mixture / heterogeneous mixture / element] |
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| dissolving salt in water is a [physical / chemical] change |
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| freezing water is a [physical / chemical] change. |
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| cooking a steak is a [physical / chemical] change. |
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| lighting a match is a [physical / chemical] change. |
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| state the difference between a physical change and a chemical change |
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physical changes can be reversed; chemical changes cannot be reversed.
physical changes -- are just changes in spacing of particles.
Chemical changes -- particles get broken apart and rearranged. |
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| Select three likely indications that a chemical change has occurred; [ formation of solid due to loss of heat / irriversibility / a change in color or older or production of gas / energy released or absorbed / reversibility] |
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Definition
| irriversibility, a change in color or odor, or production of a gas, energy released or absorbed |
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| which indication is most suggestive of the chemical reaction? [ formation of solid due to loss of heat / irriversibility / a change in color or older or production of gas / energy released or absorbed / reversibility] |
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| a change in color or odor, or production of a gas. |
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| state law of conservation of mass. |
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Definition
| Mass stays the same during a reaction. the mass of reactive = mass of products. |
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| How does the mass of reactants compare with the mass of products in a given reaction? |
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| The mass of reactants equals the mass of products |
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| An egg is a [ element / compound / mixture] |
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| a cake is a [ element / compound / mixture] |
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| dry ice (CO2) is a [ element / compound / mixture] |
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| iron powder is a [ element / compound / mixture] |
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| matter occupies _______ and it has_______ |
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| matter occupies space and it has volume |
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| matter exists in one of four_______ or_______ |
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| _______ and_______ are the two necessary and sufficient characteristics of matter |
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| to quantify these fundamental realities, scientists had to agree upon_______ |
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| An object completely immersed in a liquid displaces its own_______ of liquid. |
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| the density of an object is one identifying_______ other system. |
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| the density of a substance is independent of its volume. (just remember that) |
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| _______ Or_______ can be used to determine the density of the system. |
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FACT: the density of any system can be obtained by determining the mass (M) and the volume (V) and dividing (V) into (M).
state the equation. |
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| the_______ bubble fluid is not necessarily proportional to its density. |
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| each _______ _______ has properties which can be used as identifying characteristics to separate a mixture into its component substances. |
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| the _______ _______ of a pure substance is a constant. |
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| fact; substances in a mixture can be separated if the boiling temperatures of the component substances are different. |
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| Substance is even in the liquid and solid state have_______ |
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| Interstices (space between particles) |
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| the_______ area of the substance varies in definitely with shape. |
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| the volume of a mixed year can be different from the volume you get by simply_______ the volumes of the individual component substances |
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| in physical changes, the_______ remains unchanged. |
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| in physical changes, the_______ of the substance can change. |
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| fact; in physical changes, the component substances retain their characteristic properties. |
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| The dissolving rate depends on the surface_______ of the materials in contact with one another. |
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| a change in substances necessarily associated with a_______ change. |
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| fact: a chemical change reveals the particular nature of matter |
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| in a chemical change. The composite_______ of the system does not change. |
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| there are definite_______ that accompany a chemical change |
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| fact: the rate of the chemical change depends on the nature of the particles involved. |
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| complex substances can be broken down into_______ which are represented by symbols |
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| fact: compounds can be classified according to their reactions and elements they contain. |
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| Fact: combos that contain the same atoms or groups of atoms act in similar ways. |
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