Which of the following is made of matter?

a. the sun

b. light

c. heat

d. energy

A sample of O2 gas at a given temperature and pressure has a density of 1.30 g L-1. What is the density of gaseous propane (C3H8) under the same conditions?

Which of the following is a complete description of the velocity of an object in motion? A train travels due west at 90 km/h. A 7 kg bowling ball rolls a distance of 20 m in 3 s. A runner jogs 6 km/h for 10 minutes.

What occurs in the A horizon of soil

Which structure is found in all eukaryotic cells

A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and water by filtration or centrifuge. What type of mixture is it?

A substance made of one or more atoms of a single type is a/an

Can an acidic solution oxidize a piece of aluminum? can an acidic solution oxidize a piece of aluminum? yes no

How can you tell if a sample of matter is an element?

Predict whether litmus paper will turn red or blue when dipped in: a. washing powder (containing sodium carbonate) b. orange juice (containing citric acid) c. lemonade (containing H2CO₃) d. cleaner (containg NH₃)

Contrast the structures of ionic compounds and metals.