The ___________ are all the substances present before a chemical change.
What are reactants?
Vinegar combines with baking soda and forms a lot of bubbles. This is a _____________ change.
What is chemical?
The _____________ are all the substances present after a chemical change.
What are products?
An ice cube starts melting to form liquid water. This is a ____________ change.
What is physical?
The Law of Conservation of Mass states...
The mass of the reactants = The mass of the products
A piece of wood is chopped in half. This is a ___________ change.
What is physical?
2 g of hydrogen reacts with 16 grams of oxygen to form how many grams of water?
What is 18 g?
Snake venom combines with blood and becomes toxic. This is a _________ change.
What is chemical?
28 g of salt produces 20 grams of chlorine and how many grams of sodium?
What is 8 grams?
When a glow stick is cracked, it starts to produce a colorful light. This is a ___________ change.
What is chemical?