I got three questions.

Question

If you were making a tool used to handle live electrical wires, which class of materials would you most likely use?
***Semimetals
Metalloids
Nonmetals
Metals

Which of the following changes gives no evidence that a chemical reaction has taken place?
A cube of solid forms a puddle of liquid
A certain liquid is added to a solid, and bubbles of gas form
Two liquids are mixed, and a precipitate forms
Heating a blue solid turns the solid white

Which of the following factors would not speed up a chemical reaction?

Answer 1

Sorry about the last question not having answers. Here they are.

Increasing the concentration of a reactant
Adding a catalyst
raising the temperature
Making the reactant particles larger

Answer 2

Here are my answers for the questions

1. A
2. C
3. C

Answer 3

I believe that they are correct.

Answer 4

I'll post later to tell if they were right.

Answer 5

1 and 2 are wrong. 3 is ok.

Answer 6

Then what do you think?

Answer 7

what are the answers? :)