With the decrease in the concentration of product, a positive

sign is used to express the rate of reaction in terms of the

product

TRUE

FALSE

What is being oxidized?

The Lewis structure of O2 has a double-bond? true or false

1. What is a chemical reaction?

A runner has a mass of 75 kg and a speed of 10 m/s. What is her kinetic energy? (KE = 1/2mv2)

Which of these has the most mass? A. a laser beam B. a rocket in space C. a pitched baseball D. a stationary baseball

Bromine + calcium iodide  calcium bromide + iodine

Why do metals tend to lose electrons to form positive ions? A) They hold on tightly to electrons. B) A metals atom loses its few valence electrons to form a full octet.

2. To what volume will you have to dilute 20.0 ml of a 8 M HCl solution to make a 0.35 M HCI solution?

A pure titanium cube has an edge length of 2.84 in how many titanium atoms does it contain? titanium has a density of 4.50g/cm3.

Select the group of organelles that is common to both plant cells and animal cells. A. nucleus, cytoplasm, ribosomes, chloroplasts B. cell wall, ribosomes, cell membrane, mitochondria C. cytoplasm, mitochondria, cell wall, nucleus D.