Unit 1 Test: Physical Science and Matter

A measurement is given to you with the SI unit of kilograms. What is this a measure of?

• amount of a substance

• temperature

• mass

How did Democritus contribute to the understanding of matter?

• He proposed that matter was made of small indivisible spheres called atoms

• He is credited with being the first to think of elements combining to make more complex forms of matter with his idea of fire, water, air, and earth

• He saw the first atom under a microscope

Tags

NGSS.MS-PS1-1

According to the model of the atom hypothesized by Neils Bohr, where can electrons be found around an atom's nucleus?

• Bundled together as a separate negatively charged nucleus bonded to the positively charged nucleus

• At certain distances away from the nucleus in shells

• Inside and outside the nucleus

• Any distance away from the nucleus

Which scientist developed this atomic model?

• Thomson

• Rutherford

• Dalton

• Bohr

Who is considered the father of the periodic table for creating an organizational system which predicted the properties of unknown elements?

• Julius Lothar Meyer

• John Newlands

• Dmitri Mendeleev

• Earnest Rutherford

Tags

NGSS.HS-PS1-1

The International Union of Pure and Applied Chemistry is an organization which heads what important responsibility in the field?

• The naming of chemicals

• The marketing of chemicals for consumers

• The approval of new researchers

How is the modern periodic table organized?

• Atomic mass

• Nonmetals, metals, and metalloids

• Atomic number

Which of the following is NOT a physical property of matter?

• Flammability

• Melting Point

• Color

If eyeglass frames are produced by bending the metal into the desired shape, what physical property is being demonstrated?

• Reactivity

• Density

• Malleability

Which item represents a mixture?

• Baking soda

• Sugar

• Water

• Salad dressing