Chemistry, 28.02.2021 06:00 seannalove6168

Oxygen (O2) Carbon Dioxide (CO2)

Water (H2O)

contains 2 oxygen atoms per molecule

contains 2 oxygen atoms per molecule

contains 1 oxygen atom per molecule

gas at room temperature

gas at room temperature

liquid or gas at room temperature

flammable

not flammable

not flammable

A student compared some chemical and physical properties of three pure substances. Her data are recorded in the chart above. What is a logical conclusion the student can draw about pure substances?
A. Pure substances have the same chemical and physical properties.
B. Pure substances have the same chemical properties, but different physical properties.
C. Pure substances have the different chemical properties, but the same physical properties.
D. Pure substances have different chemical and physical properties.

Answers: 1

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 06:30

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Answers: 1

Answer

Chemistry, 22.06.2019 08:30

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol

Answers: 2

Answer

Chemistry, 22.06.2019 12:30

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Answers: 3

Answer

Chemistry, 22.06.2019 21:00

One similarity and one difference between an element and a mixture of elements

Answers: 1

Answer

You know the right answer?

Oxygen (O2) Carbon Dioxide (CO2)

Water (H2O)

contains 2 oxygen atoms per mo...

Questions