WorksheetsTCI - UNIT 1 LESSON 1 - ATOMS & ELEMENTS
Total questions: 20
Worksheet time: 11mins
Which of the following is made up of particles of matter? (a baseball bat, a rubber tire, a human being, or all of the above)
A BASEBALL BAT
A RUBBER TIRE
A HUMAN BEING
ALL OF THE ABOVE
WHAT IS AN ELEMENT?
AN INDIVIDUAL PARTICLE OF AN ELEMENT.
A UNIQUE PARTICLE OF MATTER THAT IS FUNDAMENTAL BUILDING BLOCK OF MATTER.
What is NOT true of atoms?
SOME ATOMS CAN BE SEEN WITH A MAGNIFYING GLASS.
SOME ATOMS ARE SO LARGE YOU DO NOT NEED A MAGNIFYING TO SEE THEM.
SCIENTISTS USE THE ATOMIC SCALE TO MEASURE THE
SIZE OF PROTONS
SIZE OF ATOMS
What were some of Rohrer and Binnig's main criteria for developing a technique that would allow them to see atoms?
They needed to measure and move individual atoms.
They needed to touch atoms with their hands.
What was a constraint faced by Rohrer and Binnig when making their new microscope?
They couldn't find materials. They did not make their microscope.
The available technology made it difficult to see something as small as an atom.
What did Rohrer and Binnig call their new microscope?
MTV
STM
Atomic mass is the mass of...
many atoms
a single atom
What is the unit of measurement scientists use for atomic mass?
daltons (Da)
amu
What did John Newlands notice after arranging the elements in order of their atomic masses?
Every eighth element shares similar characteristics.
Every twelfth element shares similar characteristics.
What system did Mendeleev use to arrange the elements according to their properties?
He arranged the elements by rows according to their properties.
He arranged the elements by columns according to their properties.
What did Mendeleev do when he came across an element that did not share properties with its column?
He left a blank space because he hypothesized it was an element that had not been discovered.
He put an X in the space.
The periodic table of elements is a table that lists all of the known elements and groups them into columns by property.
TRUE
FALSE
How many types of atoms naturally occur in the world?
152
92
What is NOT true of the periodic table?
The atomic masses decrease as you go down each column.
The atomic masses increase as you go down each column.
Scientists use patterns in the periodic table to predict what will happen when two elements mix.
TRUE
FALSE
What is a chemical symbol?
a number notation that represents the name of an element
a shorthand notation that represents the name of an element
What does the chemical symbol C stand for?
Calcium
carbon
What is a benefit of using chemical symbols when talking about elements? Chemical symbols are the same across languages.
TRUE
FALSE
What is one unit of measurement that scientists use to describe the size of atoms?
picometer
millimeter
