Atoms STAAR Test

Which statement accurately describes the atoms of a specific element?

• Ni, atom contains 32 electrons outside the nucleus and 64 neutrons inside the nucleus.

• Te, atom contains 52 protons inside the nucleus and 26 electrons outside the nucleus.

• Ca, atom contains 20 protons inside the nucleus and 20 electrons outside the nucleus.

• Br, atom contains 35 protons outside the nucleus and 35 electrons inside the nucleus.

Tags

NGSS.MS-PS1-1

Which statement correctly describes the location and charge of neutrons in an atom?

• The neutrons are inside the nucleus and have a negative charge.

• The neutrons are outside the nucleus and have a neutral charge.

• The neutrons are inside the nucleus and have a neutral charge.

• The neutrons are outside the nucleus and have a negative charge.

What is the difference in the number of electrons in an atom of silicon (Si) and an atom of iodine (I)?

• 67

• 39

• 98

• 98.815

How many protons, neutrons, and electrons are present in an atom of Barium (Ba) with a mass number of 138?

• 56 protons, 82 neutrons, and 56 electrons

• 56 protons, 138 neutrons, 82 electrons

• 56 protons, 81 neutrons, and 56 electrons

• 56 protons, 56 neutrons, and 56 electrons

How many protons does Lithium have?

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

Elements are the substances that are made up of only ____ type of atom.

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

Silicon has a mass number of 28 and an atomic number of 14. How many protons does it have?

• 28

• 14

• 42

• 7

Tags

NGSS.MS-PS1-1

How many electrons does Lithium have?

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many protons, neutrons, and electrons does sulfur have? It's atomic number is 16 and it's atomic mass is 32.

• 16 protons, 16 neutrons, and 16 electrons

• 16 protons, 32 neutrons, and 16 electrons

• 16 protons, 16 neutrons, and 32 electrons

• 32 protons, 16 neutrons, and 16 electrons.

Tags

NGSS.MS-PS1-1

Are the two atoms in the graphic the same?

• They have the same number of protons, so they the same element.

• They have a different number of protons, so they are not the same element.

Tags

NGSS.MS-PS1-1