Under what conditions the interaction - chlorine + hydrogen = hydrogen chloride takes place with an explosion: A: when stirring;
B: in the cold;
C: at maximum contact and in the dark;
D: at maximum contact and direct sunlight?
Task 2: In separate cups are placed a teaspoon of the substances salt, sugar, flour and baking soda. They are covered with vinegar. Which of the substances will interact with the vinegar at room temperature?
?

3: Under what conditions hydrogen and oxygen are obtained from water;
A: at room temperature
B: when cooling
C: in the dark
D: when an electric current flows?

4: Which of the following changes is not a sign of a chemical reaction:
A: Heat release
B: Stirring;
C: Light releasing
D: Dissolving sludge?

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

What type of reaction fuels the processes seen here?

Which type of intermolecular force is pbr3