Texas Staar CAT 1 8th Grade Science Prep - Shrontzclass

Question 1

How many valence electrons are present in this atomic diagram?

Accepted Answer

3

Question 2

Mr. Shrontz's favorite university is?

Accepted Answer

Purdue University

Question 3

Car three is determined to have a volume of 1 cm3. What is the density of car 3?

Accepted Answer

0.25 kg/cm3

Question 4

How many valence electrons are in this image?

Accepted Answer

4

Question 5

The vast majority of the elements in the periodic table are classified as what?

Accepted Answer

metals

Question 6

If an atom was enlarged to the size of a football field, a proton would be the size of a what?

Accepted Answer

nickel

Question 7

Which of these is the most likely identity of this atom?

Accepted Answer

Lithium

Question 8

This subatomic particle has the mass equal to 1840 electrons and has a positive charge.

Accepted Answer

proton

Question 9

An atom has 22 neutrons, 21 protons and 19 electrons. What is the overall charge on this atom?

Accepted Answer

+2

Question 10

When determining reactivity of an element, this factor is the most important for chemists:

Accepted Answer

valence eletrons

Question 11

What is the charge in the nucleus of this atom?

Accepted Answer

+3

Question 12

What kinds of atoms do you find on the left side of the periodic table?

Accepted Answer

metals

Questions 12