WorksheetsQ1W4 Review Chem
Total questions: 20
Worksheet time: 13mins
Cracked glassware, such as test tubes, should be disposed of is a broken glass container.
True
False
Match the following
the diagram and its separation techniques
filtration
distillation
evaporation
chromatography
A physical blend of 2 or more components is called a ____.
type of element
mixture
chemical reaction
physical property
A mixture in which the composition is NOT uniform throughout is called a _____ mixture.
Heterogeneous
Homogeneous
What type of mixture is shown?
Homogeneous
Heterogeneous
Which of the following are examples of heterogenous mixtures? (a) (b) (c)
(d)
cereal
Phase changes, such as solid to liquid, are considered what type of change?
A characteristic of matter that can only be observed when matter is changed into a new kind of matter, such as observing how two substances interact, is which of the following?
Chemical
Physical
Biological
Pure Substance
What is the mass on this triple beam? (Round up.)
Which of the following is an intensive physcial property?
The mass of a substance
The volume of the substance
The density of the substance
The length of the substance
Boiling/Melting points are what type of physical property?
(a)
How could you protect yourself when handling a dangerous chemical?
Cover exposed skin with aprons and gloves.
Wear flip flops or open-toed shoes to labs.
Rinse using the chemical shower.
Spread sand over the spilled liquid.
How should a student interpret the following hazardous materials symbol: Blue 1, Red 3, Yellow 1, White blank?
The substance is completely safe
The substance is slightly hazardous to health, highly flammable, and slightly unstable
The substance is highly unstable, only slightly flammable, and health concerns are minor
The substance is highly reactive, nonflammable, and a health danger
Which area is the most significant and the most hazardous for anhydrous ammonia?
health
fire
reactivity
specific hazards
they are equally significant and hazardous
Gases are highly compressible because...
They are far apart relative to their size
Compounds can be physically separated.
True
False
Gases expand to fill the entire volume of their container.
True
False
Reorder the following from least dense to most dense, from left to right.
Gas
Liquid
Solid
