Chemistry Final

In an endothermic reaction, heat is ...

• Absorbed

• released

Tags

NGSS.MS-PS1-4

A substance that increases the rate of a reaction without being used up during the reaction is called a

• catalyst

• product

• reactant

• solute

Tags

NGSS.HS-PS1-5

What is the mass of the Chlorine gas?

2NaCl + F2 ➜ 2NaF + Cl2

5.4g + 3.2g = 4.9g + ____g

Mathematical Equivalence

ON

Tags

NGSS.MS-PS1-5

In what state of matter are the atoms moving the slowest? (a)  

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

How does adding heat affect liquid water?

• it becomes a solid

• its molecules move faster

• new substances form

• a color change is produced

Tags

NGSS.MS-PS1-4

What is the symbol for Hydrogen? (a)  

• Hy

• He

• H

• N

What is a positivly charge atom called? (a)  

• cation

• anion

What is a coefficient?

• The small number on the right of the chemical symbol.

• The large number to the left of a formula.

Tags

NGSS.MS-PS1-5

Which subatomic particle has a POSITIVE charge? (a)  

• Protons

• Neutrons

• Electrons

• Nucleus

Which subatomic particle has a NEGATIVE charge? (a)  

• Protons

• Neutrons

• Electrons

• Nucleus