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?

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

Connect the whole numbers on the periodic table to indicate what they represent?

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give