chapter one test Flashcards
In which phase does a substance have a definite volume but no definite shape? A) Solid, B) Liquid C) Gas D) Plasma
b
in which phase does a substance have very fast moving particles that take the shape of it’s container?
a.) Solid b) Liquid c) Gas d) Plasma
C
Which of the following is a physical property?
a) Capable of rusting in the air
b) reactivity to acid
c) Flammable
d) Boiling point
Boiling point
When a substance changes from a liquid to a gas, this is called
a) boiling b) melting c) condensing d) freezing
A
which of the following is NOT an example of a chemical reaction?
a) a body decomposing b) digestion of food c) deposition d) Burning wood
C
which of the following is not found as a diatomic element in nature? a) Boron b) Oxygen c) Hydrogen d) fluorine
A
a pure substance made up of only one type of atom is called an a) compound
b) element
c) homogeneous Mixture
d) heterogenous Mixture
B
which of the following substances is dissolved in water?
a) HNO3 (s)
b) HNO3 (l)
c) HNO3 (g)
d) HNO3 (aq)
D
Substances composed of atoms of 2 or mor different elements that are bonded are called: a) Diatomic elements b) Compounds
c) Homogenous Mixtures, d) Heterogeneous Mixtures
B
Substance that are combined physically and can be physically separated are called: a) mixtures b) atoms c) Elements d) compounds
a
Which of the following substances can’t be broken down by ordinary chemical means?
a) Water (H20)
b) Copper (Cu)
c) Isopropyl Alcohol (C3H80) or d) Glucose (C6H1206)
B
which of the following is made up of only one type of atom?
a) NaF
b) N2
c) SiF4
d) MgI2
b
what is the smallest unit of an element that still retains the elements properties?
a) electron
b) Atom
c) Proton or d) compound
b
how many significant figures does 21,500 cm3 have?
a) 0
b) 3
c) 5
d) infinite
B
the mass of a liquid substance is 0.95 g. Students measured the mass as 0.56g, 0.55g and 0.57g which best describes the students measurements? a) accurate but not precise, b) precise but not accurate c) both precise and accurate d) neither precise or accurate
B
which piece of equipment is best to use to transfer a solid powder from one container to another?
a) scoopula b) Pipet
c) Test tube holder d) erlenmeyer flask
a
which piece of equipment is best used for transferring small amounts of liquid?
a) Scoopula b) pipet c) test tube holder d) weigh paper
b
what is the SI unit of Mass?
a) gram (g)
b) Kilogram (kg)
c) Newton (N)
d) Pound (lb)
B
which piece of equipment can be used to hold a substance during heating? a) Beaker b) Erlenmeyer flask c) test tube
d) all of the above
D
which piece of equipment is best to use for measuring volume of liquids?
a) Beaker b) graduated cylinder c) erlenmeyer flask d) volumetric flask
b
when performing an experiment that creates a lot of fumes use the:
a) ventilator b) bunsen burner c) wafting technique d) Fume Hood
D
the three ways a chemical can enter your body are:
a) absorption, touch, Ingestion
b) absorption, inhalation, ingestion
d) digestion, corrosion, consumption
d) abrasion, inhalation, smelling
b
in which phase does a substance have particles that are very tightly packed? A) solid, B) Liquid C) Gas D) Plasma
A
