Which will speed up a chemical reaction?

A.

Apply heat.

B.

Increase the concentration of the reactants.

C.

Grind up the substance, so there is more surface area.

D.

all of the above

A spacecraft is launched from Earth toward the moon. Where will the spacecraft be when the gravitational forces acting on it are equal? A. Closer to Earth than to the moon because the moon has greater mass than Earth. B.

How does the release of an alpha particle affect a mass number? Atomic number?

Are these answers correct for the number of electrons? Download pdf

The acceleration produced by a net force on a body is inversely proportional to the mass of the body. a. True b. False

A system is said to be in a state of dynamic equilibrium when the

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the

Students will explain, distinguish the difference between the 4 states of matter

Name one way that a mixture can be separated

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions. On average, the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20-m wide and averages 20-m deep.