Season 23 Final Immunity

A substance that cannot be broken down into a simpler substance is

• a compound
• an element
• a mixture
• a colloid

Which of these substances is not an element?

• steel
• aluminum
• hydrogen
• iron

The mass and volume data for four liquid samples at 22ᴼC are given in the table below

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-2

Chemical properties can be observed only when

• the substances in the sample are changing into different substances
• the substances are observer under conditions of extreme heat
• placed under a microscope
• the substances are in a liquid state

Tags

NGSS.MS-PS1-2

Identify the mixture in the image below

• x
• y
• z
• w

Tags

NGSS.MS-PS1-1

The number of which type of particle determines the identity of an element?

• electrons
• neutrons
• protons
• photons

The sum of the protons and neutrons in an atom is called the _____________

• isotope number
• allotrope number
• mass number
• atomic number

Which describes an atom with an atomic number of 29?

• 10 protons, 9 neutrons
• 9 protons, 10 neutrons
• 20 protons, 9 neutrons
• 29 protons, 35 neutrons

Tags

NGSS.MS-PS1-1

Equal to the number of protons in a neutral atom

• electrons
• neutrons
• ions
• isotopes

One _______ and ______ are added to each element as you move across the periodic table.

• electron and neutron
• proton and neutron
• proton and electron
• proton and quark