decrease increase repel itself attract itself
Is used up very quickly in a reaction Is used up quite quickly in a reaction Is used up very slowly in a reaction Is not used up in a reaction
A transition metal A noble gas A halogen A covalent molecule
Increases the activation energy for a reaction Decreases the activation energy for a reaction Does not change the activation energy for a reaction Has an infinite activation energy
Synthetic foam Green substance Large fish Biological catalyst
Isomerase Polymerase Sweetase Ethyl ethanoate
Replicate Mutate Turn starch black Denature