Science Midterm 8th grade

Question 1

Which of the following is an exothermic change?

Accepted Answer

Condensation

Question 2

True or false: lanthanides are radioactive and unstable

Accepted Answer

False

Question 3

If Mr. Loula takes 40 hours to run 360 miles, what is his speed?

Accepted Answer

9 m/h

Question 4

The number of protons in the nucleus of an atom is...

Accepted Answer

Atomic number

Question 5

In Boyle's law, if the pressure increase, the volume...

Accepted Answer

Decreases

Question 6

True or false: during endothermic changes, energy is gained

Accepted Answer

True

Question 7

What is the process where particles of substances separate and spread evenly?

Accepted Answer

Dissolving

Question 8

What's the formula for density?

Accepted Answer

Density= mass/ volume

Question 9

whats the first part of the scientific method?

Accepted Answer

Identify the problem

Question 10

What's not one of the three major categories of elements?

Accepted Answer

Malleable

Question 11

Which of the following is NOT true?

Accepted Answer

Halogen is group 16

Question 12

WhAt is the SI unit for force?

Accepted Answer

Newtons

Question 13

Something that repeats at regular intervals is...

Accepted Answer

Periodic

Question 14

The 3 states of matter are...

Accepted Answer

Liquid, gas, solid

Question 15

True or false: a liquid has a definite volume and definite shape

Accepted Answer

False

Question 16

Which is not stated on Daltons theory?

Accepted Answer

All substances have atoms that are evenly spread out

Question 17

Physical science is the study of....?

Accepted Answer

Matter and energy

Question 18

True or false: a neutron is a negatively charged particle

Accepted Answer

False

Questions 18