Which type of substance cannot be separated physically?

an alloy

a mixture

pure

heterogeneous

Is work done when you lift a brick? A. No, the force applied is parallel to the direction of motion. B. Yes, the force applied is parallel to the direction of motion. C. No, the force applied is perpendicular to the direction of motion. D.

Sort the sentences based on whether they describe the properties of a heterogeneous or a homogenous mixture. homogenous mixture heterogeneous mixture to put in the boxes Its components are visible. It may be mistaken for a pure substance.

The Curies took pure uranium and a uranium-containing substance. When they measured the amount of radioactivity, there was more in the uranium-containing substance than the pure uranium. Which idea did the Curies most likely develop?

If you transfer a liter of oxygen into a 2 liter container and the gas expands to fill the entire container. Does the density of the oxygen change?

Name And Briefly Describe the three Gas laws

The light-year (ly) is a unit of distance commonly used in astronomy. it is defined as the distance traveled by light in a vacuum in one year.

The length of the hypotenuse of a 30°-60°-90° triangle is 8. What is the length of the longer leg? Enter your answer as an exact number (not rounded).

One similarity between work and power is that in order to calculate both you must know

Describe the relationship between volume, mass and density.

How does an elecrical power plant work?