Please cheek my answers please i beg you!!!!
A material with chemical and physical properties different than those of the elements from which it is made is:
a solution
a compound -
an element
a mixture
Sterling silver is:
a heterogeneous mixture
colloid
an element
Homogeneous mixture -
Which mixture has the largest particle size?
solution
colloid
compound
suspension -
Which of the following is not true about compounds?
Compounds are combinations of elements that join in specific ratios. -
A specific compound always has the same mass ratio of its components.
Elements can combine in any proportion to form a compound.
Different mass ratios of components mean different compounds.
A concentrated beam of light (laser) cannot pass through this type of mixture without scattering?
element
colloid -
solution
compound
A compound differs from a mixture in that a compound always has a:
fixed composition -
maximum of two components
minimum of three components
variable composition
Classify each of the following as an element, compound, or mixture. ( i need help on these)
mixture
compound
element
Answer
A.
propane gas
B.
soil (dirt)
C.
solid gold coin
A suspension is composed of substances that remain evenly distributed among each other.
True
False -
Chemical compounds can be separated into their component elements by physical means.
True -
False
Molecules can be either positively or negatively charged depending upon their elemental arrangement.
True -
False