Solids are often defined as having a definite shape, while gases and liquids have no definite shape. This can best be explained by the fact that
Asolids have a more ordered arrangement of atoms than liquids and gases.
Bin solids molecules move faster than in liquids or gases.
Csolids have less internal energy than liquids and gases.
Dsolids have the least orderly internal structure.
15)
Color, shape, texture, and size are _____________ properties of matter.
Achemical
Bliquid
Cphysical
Dsolid
16)
Which is evidence that a chemical reaction has occurred?
Aa phase change occurs
Ba new gas is observed in the form of bubbles
Cred and yellow paint mixing to make orange paint
Dthe temperature of the substance remains constant
17)
reactant → product
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
A0 grams
B2 grams
C4 grams
D8 grams
18)
Which of these is an example of a physical change?
Airon melting
Bsteel rusting
Cpaper burning
Dwood decaying
19)
A + B + C → D + E
Describe the mass of the reactants and products given the balanced chemical reaction.
AThe mass of the products is 2/3 that of the reactants.
BThe mass of the reactants equals the mass of the products.
CThe mass of the reactants is less than the mass of the products.
DThe mass of the reactants is greater than the mass of the products.
Asolids have a more ordered arrangement of atoms than liquids and gases.
Bin solids molecules move faster than in liquids or gases.
Csolids have less internal energy than liquids and gases.
Dsolids have the least orderly internal structure.
Color, shape, texture, and size are _____________ properties of matter.
Achemical
Bliquid
Cphysical
Dsolid
Which is evidence that a chemical reaction has occurred?
Aa phase change occurs
Ba new gas is observed in the form of bubbles
Cred and yellow paint mixing to make orange paint
Dthe temperature of the substance remains constant
reactant → product
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
A0 grams
B2 grams
C4 grams
D8 grams
Which of these is an example of a physical change?
Airon melting
Bsteel rusting
Cpaper burning
Dwood decaying
A + B + C → D + E
Describe the mass of the reactants and products given the balanced chemical reaction.
AThe mass of the products is 2/3 that of the reactants.
BThe mass of the reactants equals the mass of the products.
CThe mass of the reactants is less than the mass of the products.
DThe mass of the reactants is greater than the mass of the products.