Why does an increase in reaction temperature generally increase the reaction rate? The number of particles increases.

The energy required decreases.

The container warms up.

The number of collisions increases.

1. Which of the following rules determines the charge on a monatomic Ion formed from a nonmetal? A. Group number - 8 B. Group number/8 C. 8 - group number D. 8 x group number 2. Which of the following statements is true? A.

What is the element sulfur classified as

Explain how we could prove specifically (by precipitation method) the presence of chloride, bromide or iodide from a solution that contains halide ions.

Nickel has an atomic mass of 58.69, and cobalt has an atomic mass of 58.93. Despite this, Mendeleev listed cobalt before nickel in his periodic table. What information caused Mendeleev to order the elements in this way?

Relate How do atoms relate to cells?

When an atom that has no charge loses two electrons, it becomes a: A: positive ion. B: negative ion. C: positive isotope. D: negative isotope.

A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)

Which state of matter is characterized by having an indefinite shape, but a definite volume? Gas Liquid Solid None of the above

What metric unit is used to measure distance?

In the chemical formula 3NO2 the number 3 is a