SC 8 P 8 6

Using a periodic table, determine which of the following pairs of elements would have the most similar properties: (SC.8.P.8.6)

• (H) Hydrogen and (He) Helium

• (N) Nitrogen and (Si) Silicon

• (Ca) Calcium and (Fe) Iron

• (Li) Lithium and (K) Potassium

How many protons are in Carbon-14?

• 6

• 8

• 14

• 12

What is the atomic mass for silicon?

• 14.0

• 14.1

• 28.1

• 42.1

Why is an atom considered electrically neutral?

• The number of protons equals the atomic number.

• The number of electrons equals the number of neutrons.

• The number of protons is the same as the number of electrons.

• The number of electromagnetics equals the number of proteins

A subatomic particle with a neutral charge is called

• a proton

• an isotope

• an electron

• a neutron

An atom with the same atomic number but a different mass number is called

• an ion

• an isotope

• an element

How many neutrons are in Lithium-7?

• 4

• 3

• 7

• 5

Tags

NGSS.MS-PS1-1

A(n) ________________________ is the smallest particle of an element that has the chemical properties of that element.

• atom

• proton

• neutron

• electron

Tags

NGSS.MS-PS1-1

The chart gives the atomic number and mass number of two elements. How many protons does Element B have?

• 10

• 20

• 9

• 19

Tags

NGSS.MS-PS1-1

Here is a square that represents one element of the periodic table. What information is in this square of the periodic table, from top to bottom?

• average atomic mass, chemical symbol, chemical name, atomic number

• atomic number, chemical symbol, chemical name, average atomic mass

• average atomic mass, chemical symbol, chemical name, proton number

• average atomic mass, chemical symbol, chemical name, proton number