I need help on my chem test!! i just need a self checker?

Jodi

New member
1.) Chemistry is the study of the composition, structure and properties of substances.

True/False


2.) Inorganic chemistry does not include the study of carbon.

True/False


3.) A hypothesis is a testable statement.

True/False


4.) Weight is a measure of the quantity of matter.

True/False


5.) Matter cannot be created nor destroyed by ordinary chemical means.

True/False


6.) Potential energy is energy of motion.

True/False


7.) Liquids have both definite shape and definite volume.

True/False


8.) The ability to burn is a chemical property.

True/False


9.) Exothermic reactions release heat.

True/False


10.)Solutions are heterogeneous mixtures.

True/False


11.) An element cannot be broken down into simpler substances by ordinary chemical means.

True/False


12.) The horizontal rows on the periodic table are called groups.

True/False


13.) The SI standard for length is the meter.

True/False


14.) The SI standard for mass is the gram.

True/False


15.) Mass is the amount of space occupied by an object.

True/False


16.) Density is the mass of a substance per unit of volume.

True/False


17.) The amount of heat in an object and its temperature are the same thing.

True/False


18.) The SI system uses the Kelvin temperature scale.

True/False


19.) 100° is the boiling point of water in °C.

True/False


20.) The amount of heat needed to raise the temperature of one gram of a substance 1°C is specific heat.

True/False


21.) The number of _______ particles in the nucleus determines the identity of an element.

a.) proton
b.) neutron
c.) electron


22.) Which of the following has a negative charge?

a.) proton
b.) neutron
c.) electron


23.) Which of the following has almost no mass?

a.) proton
b.) neutron
c.) electron


24.) Which of the following has a positive charge?

a.) proton
b.) neutron
c.) electron


25.) Which of the following orbits the nucleus?

a.) proton
b.) neutron
c.) electron


26.) Which of the following has no electrical charge?

a.) proton
b.) neutron
c.) electron


27.) Copper metal is:

a.) a poor conductor.
b.) brittle.
c.) malleable.


28.) The atomic theory was proposed by

a.) Aristotle.
b.) Dalton.
c.) Thompson.


29.) The smallest particle of an element that maintains the properties of that element is

a.) an atom.
b.) an electron.
c.) a proton.


30.) Atoms of the same element that have different numbers of neutrons are

a.) isotopes.
b.) isomers.
c.) ions.


31.)The atomic number is equal to the number of

a.) protons and neutrons.
b.) neutrons.
c.) protons.


32.) The distance between corresponding points of adjacent waves is the

a,) frequency.
b.) amplitude.
c.) wavelength.


33.) Light has properties of

a.) particles.
b.) waves.
c.) both.


34.) The theory that describes the wave properties of electrons is

a.) quantum theory.
b.) atomic theory.
c.) kinetic theory.


35.) The principal quantum number indicates the

a.) pair of electrons.
b.) main energy level.
c.) subshells.


36.) The outer energy level of a noble gas is

a.) empty.
b.) filled.
c.) half-filled.


37.) The modern periodic law states that properties of elements are functions of their

a.) atomic numbers.
b.) atomic masses.
c.) electrons.


38.) The modern periodic table is based on the idea of

a.) Cannizzaro.
b.) Moseley.
c.) Dalton.


39.) The elements of the periodic table have similar properties in

a.) groups.
b.) periods.
c.) neither.


40.) The alkali metals are found in

a.) period 1.
b.) group 1.
c.) period 7.
 
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