Physical Science Georgia Milestones

Which is an example of a mixture?

• water

• hydrogen gas

• a blueberry muffin

• a spoon made of the element silver

Which of the following is an example of a pure substance?

• a sample of oxygen gas

• a solution of sugar water

• a mixture of pasta and sauce

• an alloy of iron and carbon

Ammonia can be represented by the chemical formula NH₃. Which of the following best describes ammonia?

• an atom

• a compound

• an element

• a mixture

Tags

NGSS.MS-PS1-1

An unknown substance is provided in a science class. It consists of particles that are different colors and different sizes. The particles are unevenly distributed throughout the substance. The substance is ___________.

• an element

• a compound

• a homogeneous mixture

• a heterogeneous mixture

An atom of the element has how many protons?

• 18

• 19

• 39

• 58

Tags

NGSS.MS-PS1-1

Which of the following could be the chemical symbol representing the element cobalt?

• co

• Co

• CO

• Cob

S8P1e The model shows a neutral atom. How many protons are in this atom?

• 2

• 4

• 5

• 9

Tags

NGSS.MS-PS1-1

In which period, or row, of the periodic table would you find this element?

• Period 2

• Period 4

• Period 6

• Period 7

Tags

NGSS.MS-PS1-1

S8P1b Which type of arrangment and movement would particles of mercury display?

• Particles closely packed together and they vibrate back and forth

• Particles are spread far apart and they move quickly

• Particles are close together but they are able to slip past one another

• Particles are spread far apart and electrons are detached from atoms

S8P1b In which state of matter do particles spread and fill the volume of the container that holds them?

• gas

• ice

• solid

• liquid