Which of the following causes a chemical change?

A. moving B. shattering C. burning D. melting

Name three things you know about angiosperms

Which compound has hydrogen bonding between its molecules? (1) CH4 (3) KH (2) CaH2 (4) NH3

Carbon is found in all living organisms. The constant flow of carbon on Earth through organisms and the air is known as the carbon cycle. absorb carbon from the atmosphere in the form of carbon dioxide. They use it for respiration and.

Which of these statements is not true? A. Molecules arc made up of atoms. B. Protons are smaller than quarks. C. Atoms are larger than protons. D. Protons are made up of quarks.

Jessica is measuring the amount of hydropower in a sustainable home. The first reading is 30 kilowatts (kW) and the second reading is 500 watts (W). What is the total amount of energy measured? a 30.5 kW b 35,000 W c 300,500 W d 305 kW

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?

In Experiment 1, the density of pure ethanol was found to be:Question 1 options:less than 0.793 g/mL. 0.793 g/mL. 0.999 g/mL. greater than 0.999 g/mL.