8C Final Review 1

What is produced when zinc reacts with sulfuric acid?

• zince sulfate, carbon dioxide

• zinc carbonate and hydrogen

• zinc sulfate and hydrogen

• zinc chloride and hydrogen

Which of these describes how charged particles affect each other?

• opposite charges repel each other

• a positively charged object will repel an uncharged object

• opposite charges attract each other

• similar charges attract each other

A reaction that releases energy to its surroundings is known as ______________.

• exothermic

• burning

• endothermic

• displacement

An atom is made up of:

• a positive nucleus surrounded by negative electrons

• a negative nucleus surrounded by positive electrons

• positive and negative charges mixed together

• an uncharged nucleus surrounded by negative electrons

A parallel circuit:

• must contain two lamps

• has just one loop

• must contain more than one cell

• has more than one loop

Which of the following is a compound?

• iron

• steel

• air

• salt

Electric current is measured in what unit?

• amps

• volts

• joules

• newtons

What charge does a proton have?

• positive

• negative

• neutral

• it has no charge

What electrical component is represented by the symbol below?

• lamp

• cell

• resistor

• ammeter

Which of the following presents a hazard in the science laboratory?

• knowing how to use equipment

• working alone

• wearing safety goggles

• following instructions