Instructions:Select the correct answer.

When a candle burns, which forms of energy does the chemical energy in the candle change to?

light and sound

heat and sound

light and heat

electric and light

What is the symbol for aluminum thiosulfate?

Explain how lubricating the wheels of the skateboard can increase the speed of the girl

Compared to a potassium atom, a potassium ion has A) a smaller radius B) a larger radius C) fewer protons D) more protons

What element in the 3rd period will form an ionic compound with a 1:1 atom ratio with magnesium?

Describe how to find calorie content in food

A scientist discovers a new type of polymer. What must be true about this polymer? A. It contains carbon atoms arranged in a ring structure. B. It has double bonds between all the carbon atoms. C. It contains molecules of many different types. D.

A line in the lyman series of hydrogen has a wavelength of 122 nm. from what state did the electron originate?

What are the products of photosynthesis? A. Glucose and oxygen B. Oxygen, solar energy, and glucose C. Carbon dioxide, water, and solar energy D. Hydrogen, oxygen, and carbon

A sample of a substance that has a density of 0.824 g/mL has a mass of 0.421 g. Calculate the volume of the sample.

The tyndall effect is used to detect A: suspensions B:liquid solitions C:tyndalls D:colloida