Mixture or pure substance: 1. blood 2. dyes 3. self-raising flour 4. muesli 5. copper wire 6. distilled water 7. table salt 8. milk 9. bronze 10. tea 11. oxygen 12. air

Salt compounds are composed of ions that form a tightly packed and ordered network, which is called a crystal lattice, and it is held together by

Which values describe standard temperature and pressure (STP) ? A. 0°C and 101.3 atm B. 100°C and 101.3 atm C. 273.15 K and 1 kPa D. 273.15 K and 101.3 kPa

A balloon is taken to a mountain top and inflated with helium to a volume of 5.0 L. The balloon is then released and rises to an altitude where the helium has a new volume of 25.0 L and a pressure of 0.18 atm.

How could you keep an objects acceleration the same if the force acting on the object were doubled

What is a major difference between a chemical reaction and a nuclear reaction? A) Only chemical reactions release light. B) Only chemical reactions can release gamma rays. C) Only nuclear reactions can change the identity of the atom.

What are facts on osmosis?

If a map of temperature displayed stripes parallel to the equator with equal temperatures at equivalent distances north and south of the equator, it would mean that only blank affected temperature.

What is the term for the amount of salts in water? Evaporation Evaporation Salinity Thermocline Density

In an acid-base titration, of 20 ml of a m HCI solution with 1 m NaOH. How many ml of NaOH are needed

Which of the following is not a source of air pollution related to human activities